diff --git a/Cargo.toml b/Cargo.toml
index 2d3122cb9084fd17e1434003c591f8e2036d1454..65935bab1f028d897229ee24541225749156fd59 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,3 +28,5 @@ try_from = "0.3.2"
 [features]
 # Build xmpp-parsers to make components instead of clients.
 component = []
+# Compatibility mode
+compat = []
diff --git a/src/attention.rs b/src/attention.rs
index be33bb3b6f07d002163bfa2ee46d4f3a7bc6b6c3..c786f3137fce92ed8eb178329fda4ee4481a1da5 100644
--- a/src/attention.rs
+++ b/src/attention.rs
@@ -18,6 +18,7 @@ impl MessagePayload for Attention {}
 #[cfg(test)]
 mod tests {
     use super::*;
+    #[cfg(not(feature = "compat"))]
     use crate::error::Error;
     use minidom::Element;
     use try_from::TryFrom;
@@ -33,6 +34,7 @@ mod tests {
         Attention::try_from(elem).unwrap();
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_child() {
         let elem: Element = "<attention xmlns='urn:xmpp:attention:0'><coucou/></attention>"
@@ -46,6 +48,7 @@ mod tests {
         assert_eq!(message, "Unknown child in attention element.");
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_attribute() {
         let elem: Element = "<attention xmlns='urn:xmpp:attention:0' coucou=''/>"
diff --git a/src/bind.rs b/src/bind.rs
index fe9472b2cc3c2192c959cd7c076dc87d9adc2786..bd09d4f3b36aa326f51790cc3f0ad0f905f6a2a0 100644
--- a/src/bind.rs
+++ b/src/bind.rs
@@ -112,6 +112,7 @@ mod tests {
         assert_eq!(bind, Bind::None);
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_resource() {
         let elem: Element = "<bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'><resource attr='coucou'>resource</resource></bind>"
diff --git a/src/blocking.rs b/src/blocking.rs
index d34fee3d97a1935c5d825e7bfc836408e74885a2..b2fe70df28c9bf49cbd6448a79504baf8f08f0d5 100644
--- a/src/blocking.rs
+++ b/src/blocking.rs
@@ -155,13 +155,16 @@ mod tests {
             },
         ];
 
-        let request_elem = elem.clone();
-        let error = BlocklistRequest::try_from(request_elem).unwrap_err();
-        let message = match error {
-            Error::ParseError(string) => string,
-            _ => panic!(),
-        };
-        assert_eq!(message, "Unknown child in blocklist element.");
+        #[cfg(not(feature = "compat"))]
+        {
+            let request_elem = elem.clone();
+            let error = BlocklistRequest::try_from(request_elem).unwrap_err();
+            let message = match error {
+                Error::ParseError(string) => string,
+                _ => panic!(),
+            };
+            assert_eq!(message, "Unknown child in blocklist element.");
+        }
 
         let result_elem = elem.clone();
         let result = BlocklistResult::try_from(result_elem).unwrap();
@@ -176,6 +179,7 @@ mod tests {
         assert_eq!(unblock.items, two_items);
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid() {
         let elem: Element = "<blocklist xmlns='urn:xmpp:blocking' coucou=''/>"
diff --git a/src/caps.rs b/src/caps.rs
index 72b04263f14bfd58a51276de57be39026c63d21e..3befdc9bc2541de8d5d401c362f4733124eecb03 100644
--- a/src/caps.rs
+++ b/src/caps.rs
@@ -233,6 +233,7 @@ mod tests {
         );
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_child() {
         let elem: Element = "<c xmlns='http://jabber.org/protocol/caps'><hash xmlns='urn:xmpp:hashes:2' algo='sha-256'>K1Njy3HZBThlo4moOD5gBGhn0U0oK7/CbfLlIUDi6o4=</hash></c>".parse().unwrap();
diff --git a/src/chatstates.rs b/src/chatstates.rs
index 75d64d91b1549651793e2fd2c2775f811743f64a..9a972aa79a4e97a820c62ac1f76275936240b214 100644
--- a/src/chatstates.rs
+++ b/src/chatstates.rs
@@ -63,6 +63,7 @@ mod tests {
         assert_eq!(message, "This is not a chatstate element.");
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_child() {
         let elem: Element = "<gone xmlns='http://jabber.org/protocol/chatstates'><coucou/></gone>"
@@ -76,6 +77,7 @@ mod tests {
         assert_eq!(message, "Unknown child in chatstate element.");
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_attribute() {
         let elem: Element = "<inactive xmlns='http://jabber.org/protocol/chatstates' coucou=''/>"
diff --git a/src/jingle_ft.rs b/src/jingle_ft.rs
index 381eb21fa288b1c37ac00ef139d4f033750b454c..359cd8b07c17f86094696d201573b5c9169bdc2f 100644
--- a/src/jingle_ft.rs
+++ b/src/jingle_ft.rs
@@ -510,13 +510,16 @@ mod tests {
         };
         assert_eq!(message, "Unknown child in received element.");
 
-        let elem: Element = "<received xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator' coucou=''/>".parse().unwrap();
-        let error = Received::try_from(elem).unwrap_err();
-        let message = match error {
-            Error::ParseError(string) => string,
-            _ => panic!(),
-        };
-        assert_eq!(message, "Unknown attribute in received element.");
+        #[cfg(not(feature = "compat"))]
+        {
+            let elem: Element = "<received xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator' coucou=''/>".parse().unwrap();
+            let error = Received::try_from(elem).unwrap_err();
+            let message = match error {
+                Error::ParseError(string) => string,
+                _ => panic!(),
+            };
+            assert_eq!(message, "Unknown attribute in received element.");
+        }
 
         let elem: Element =
             "<received xmlns='urn:xmpp:jingle:apps:file-transfer:5' creator='initiator'/>"
@@ -575,13 +578,16 @@ mod tests {
         };
         assert_eq!(message, "This is not a file element.");
 
-        let elem: Element = "<checksum xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator' coucou=''><file><hash xmlns='urn:xmpp:hashes:2' algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash></file></checksum>".parse().unwrap();
-        let error = Checksum::try_from(elem).unwrap_err();
-        let message = match error {
-            Error::ParseError(string) => string,
-            _ => panic!(),
-        };
-        assert_eq!(message, "Unknown attribute in checksum element.");
+        #[cfg(not(feature = "compat"))]
+        {
+            let elem: Element = "<checksum xmlns='urn:xmpp:jingle:apps:file-transfer:5' name='coucou' creator='initiator' coucou=''><file><hash xmlns='urn:xmpp:hashes:2' algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash></file></checksum>".parse().unwrap();
+            let error = Checksum::try_from(elem).unwrap_err();
+            let message = match error {
+                Error::ParseError(string) => string,
+                _ => panic!(),
+            };
+            assert_eq!(message, "Unknown attribute in checksum element.");
+        }
 
         let elem: Element = "<checksum xmlns='urn:xmpp:jingle:apps:file-transfer:5' creator='initiator'><file><hash xmlns='urn:xmpp:hashes:2' algo='sha-1'>w0mcJylzCn+AfvuGdqkty2+KP48=</hash></file></checksum>".parse().unwrap();
         let error = Checksum::try_from(elem).unwrap_err();
@@ -631,11 +637,14 @@ mod tests {
         let elem: Element = "<range xmlns='urn:xmpp:jingle:apps:file-transfer:5' coucou=''/>"
             .parse()
             .unwrap();
-        let error = Range::try_from(elem).unwrap_err();
-        let message = match error {
-            Error::ParseError(string) => string,
-            _ => panic!(),
-        };
-        assert_eq!(message, "Unknown attribute in range element.");
+        #[cfg(not(feature = "compat"))]
+        {
+            let error = Range::try_from(elem).unwrap_err();
+            let message = match error {
+                Error::ParseError(string) => string,
+                _ => panic!(),
+            };
+            assert_eq!(message, "Unknown attribute in range element.");
+        }
     }
 }
diff --git a/src/macros.rs b/src/macros.rs
index 62c59736dc5a52435d988e88b30597f22a3f5097..daccec5c676346e14468723f34b9151e044972a2 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -248,6 +248,7 @@ macro_rules! check_ns_only {
 
 macro_rules! check_no_children {
     ($elem:ident, $name:tt) => {
+        #[cfg(not(feature = "compat"))]
         for _ in $elem.children() {
             return Err(crate::error::Error::ParseError(concat!(
                 "Unknown child in ",
@@ -260,6 +261,7 @@ macro_rules! check_no_children {
 
 macro_rules! check_no_attributes {
     ($elem:ident, $name:tt) => {
+        #[cfg(not(feature = "compat"))]
         for _ in $elem.attrs() {
             return Err(crate::error::Error::ParseError(concat!(
                 "Unknown attribute in ",
@@ -272,6 +274,7 @@ macro_rules! check_no_attributes {
 
 macro_rules! check_no_unknown_attributes {
     ($elem:ident, $name:tt, [$($attr:tt),*]) => (
+        #[cfg(not(feature = "compat"))]
         for (_attr, _) in $elem.attrs() {
             $(
                 if _attr == $attr {
diff --git a/src/message_correct.rs b/src/message_correct.rs
index 9e7a08f726c1e789b2794949a3888ec4d8524eb8..e0d22d6257322d3a31bccbb32d20ed6cfb44ce0c 100644
--- a/src/message_correct.rs
+++ b/src/message_correct.rs
@@ -45,6 +45,7 @@ mod tests {
         Replace::try_from(elem).unwrap();
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_attribute() {
         let elem: Element = "<replace xmlns='urn:xmpp:message-correct:0' coucou=''/>"
diff --git a/src/muc/muc.rs b/src/muc/muc.rs
index 32df468d7e46f8548656f6a9503daef514dc610f..40528383da094ad9438d492d6ec92f95cf291540 100644
--- a/src/muc/muc.rs
+++ b/src/muc/muc.rs
@@ -142,6 +142,7 @@ mod tests {
         assert_eq!(elem, elem2);
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_muc_invalid_attribute() {
         let elem: Element = "<x xmlns='http://jabber.org/protocol/muc' coucou=''/>"
diff --git a/src/muc/user.rs b/src/muc/user.rs
index 2c1a6926a98b9099f207268bcb683ec9127070a1..a104e319f9104715a22655c4901631cdad49d1a9 100644
--- a/src/muc/user.rs
+++ b/src/muc/user.rs
@@ -303,6 +303,7 @@ mod tests {
         assert!(elem.compare_to(&elem2));
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_attribute() {
         let elem: Element = "
@@ -343,6 +344,7 @@ mod tests {
         assert_eq!(message, "Required attribute 'code' missing.");
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_status_invalid_child() {
         let elem: Element = "
@@ -513,6 +515,7 @@ mod tests {
         assert_eq!(reason.0, "Reason".to_owned());
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_reason_invalid_attribute() {
         let elem: Element = "
@@ -528,6 +531,7 @@ mod tests {
         assert_eq!(message, "Unknown attribute in reason element.".to_owned());
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_reason_invalid() {
         let elem: Element = "
@@ -545,6 +549,7 @@ mod tests {
         assert_eq!(message, "Unknown child in reason element.".to_owned());
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_item_invalid_attr() {
         let elem: Element = "
diff --git a/src/nick.rs b/src/nick.rs
index edf8dcacce17b23e54ac39fcbea32b87aad8d5a2..67a45ff9c5342ea6c2216ec4a4f99865e0aae859 100644
--- a/src/nick.rs
+++ b/src/nick.rs
@@ -14,6 +14,7 @@ generate_elem_id!(
 #[cfg(test)]
 mod tests {
     use super::*;
+    #[cfg(not(feature = "compat"))]
     use crate::error::Error;
     use minidom::Element;
     use try_from::TryFrom;
@@ -48,6 +49,7 @@ mod tests {
         assert_eq!(elem1, elem2);
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid() {
         let elem: Element = "<nick xmlns='http://jabber.org/protocol/nick'><coucou/></nick>"
@@ -61,6 +63,7 @@ mod tests {
         assert_eq!(message, "Unknown child in nick element.");
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_attribute() {
         let elem: Element = "<nick xmlns='http://jabber.org/protocol/nick' coucou=''/>"
diff --git a/src/ping.rs b/src/ping.rs
index 4cb25f649c453db84f9879f5871c743df187898f..6f48dd5592941854555995db680452f7a901ccaf 100644
--- a/src/ping.rs
+++ b/src/ping.rs
@@ -20,6 +20,7 @@ impl IqGetPayload for Ping {}
 #[cfg(test)]
 mod tests {
     use super::*;
+    #[cfg(not(feature = "compat"))]
     use crate::error::Error;
     use minidom::Element;
     use try_from::TryFrom;
@@ -42,6 +43,7 @@ mod tests {
         assert_eq!(elem1, elem2);
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid() {
         let elem: Element = "<ping xmlns='urn:xmpp:ping'><coucou/></ping>"
@@ -55,6 +57,7 @@ mod tests {
         assert_eq!(message, "Unknown child in ping element.");
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_attribute() {
         let elem: Element = "<ping xmlns='urn:xmpp:ping' coucou=''/>".parse().unwrap();
diff --git a/src/presence.rs b/src/presence.rs
index 1f9846c2b7dc493b5f37d6c135327ebfcd125a68..20d63e879e48ac4af6f1a147b30010a785d215cd 100644
--- a/src/presence.rs
+++ b/src/presence.rs
@@ -570,6 +570,7 @@ mod tests {
         assert!(payload.is("test", "invalid"));
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_status_child() {
         #[cfg(not(feature = "component"))]
@@ -589,6 +590,7 @@ mod tests {
         assert_eq!(message, "Unknown child in status element.");
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_attribute() {
         #[cfg(not(feature = "component"))]
diff --git a/src/pubsub/event.rs b/src/pubsub/event.rs
index fac8e2fe26b822297abf1438cfe6ae4332bd065d..0cad1cc0379fb9b7ad357821ad8f5a899057734b 100644
--- a/src/pubsub/event.rs
+++ b/src/pubsub/event.rs
@@ -420,6 +420,7 @@ mod tests {
         assert_eq!(message, "Unknown child in event element.");
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid_attribute() {
         let elem: Element = "<event xmlns='http://jabber.org/protocol/pubsub#event' coucou=''/>"
diff --git a/src/roster.rs b/src/roster.rs
index 40cc7a25dc7f8a7f935306df4507e3cff8d4862e..c0d869d1d0079196f04dfa651fbdce888178d721 100644
--- a/src/roster.rs
+++ b/src/roster.rs
@@ -245,6 +245,7 @@ mod tests {
         assert_eq!(roster.items[0].subscription, Subscription::Remove);
     }
 
+    #[cfg(not(feature = "compat"))]
     #[test]
     fn test_invalid() {
         let elem: Element = "<query xmlns='jabber:iq:roster'><coucou/></query>"
diff --git a/src/sasl.rs b/src/sasl.rs
index 86e10760b996632ded068544d3e2c05ded68c544..21e585722aaf113c0c1a391ae2c79d28aed00ed8 100644
--- a/src/sasl.rs
+++ b/src/sasl.rs
@@ -289,6 +289,7 @@ mod tests {
         );
     }
 
+    #[cfg(feature = "compat")]
     #[test]
     fn failure_with_non_prefixed_text_lang() {
         let elem: Element = "<failure xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>
@@ -299,9 +300,5 @@ mod tests {
             .unwrap();
         let failure = Failure::try_from(elem).unwrap();
         assert_eq!(failure.defined_condition, DefinedCondition::NotAuthorized);
-        assert_eq!(
-            failure.texts["en"],
-            String::from("Invalid username or password")
-        );
     }
 }