diff --git a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
index 614a6648ef0632d1ff7d06e81088a36a6c038f2d..3d15d3e11133fa3aeacd620c378fbed543444ef6 100644
--- a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
@@ -283,7 +283,9 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
 				MenuItem removeFromRoom = menu.findItem(R.id.remove_from_room);
 				MenuItem banFromConference = menu.findItem(R.id.ban_from_conference);
 				startConversation.setVisible(true);
-				showContactDetails.setVisible(true);
+				if (contact != null) {
+					showContactDetails.setVisible(true);
+				}
 				if (self.getAffiliation().ranks(MucOptions.Affiliation.ADMIN) &&
 						self.getAffiliation().outranks(user.getAffiliation())) {
 					if (mAdvancedMode) {
@@ -305,14 +307,17 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
 			}
 
 		}
-		super.onCreateContextMenu(menu,v,menuInfo);
+		super.onCreateContextMenu(menu, v, menuInfo);
 	}
 
 	@Override
 	public boolean onContextItemSelected(MenuItem item) {
 		switch (item.getItemId()) {
 			case R.id.action_contact_details:
-				switchToContactDetails(mSelectedUser.getContact());
+				Contact contact = mSelectedUser.getContact();
+				if (contact != null) {
+					switchToContactDetails(contact);
+				}
 				return true;
 			case R.id.start_conversation:
 				startConversation(mSelectedUser);
diff --git a/src/main/res/menu/muc_details_context.xml b/src/main/res/menu/muc_details_context.xml
index 592e44af112ea23e3e87de3d663ecdd955c3767b..6fddb23eacbd3c821967e7a580e3f49e4ba9434e 100644
--- a/src/main/res/menu/muc_details_context.xml
+++ b/src/main/res/menu/muc_details_context.xml
@@ -1,36 +1,36 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
-    <item
-	android:id="@+id/action_contact_details"
-	android:title="@string/action_contact_details"
-	android:visible="false" />
     <item
         android:id="@+id/start_conversation"
         android:title="@string/start_conversation"
-        android:visible="false" />
-	<item
-		android:id="@+id/give_membership"
+        android:visible="false"/>
+    <item
+        android:id="@+id/action_contact_details"
+        android:title="@string/action_contact_details"
+        android:visible="false"/>
+    <item
+        android:id="@+id/give_membership"
         android:title="@string/grant_membership"
-		android:visible="false" />
-	<item
-		android:id="@+id/give_admin_privileges"
+        android:visible="false"/>
+    <item
+        android:id="@+id/give_admin_privileges"
         android:title="@string/grant_admin_privileges"
-		android:visible="false"/>
-	<item
-		android:id="@+id/remove_admin_privileges"
+        android:visible="false"/>
+    <item
+        android:id="@+id/remove_admin_privileges"
         android:title="@string/remove_admin_privileges"
-		android:visible="false"/>
+        android:visible="false"/>
 
-	<item
-		android:id="@+id/remove_membership"
-		android:title="@string/remove_membership"
-		android:visible="false"/>
-	<item
-		android:id="@+id/ban_from_conference"
-	    android:title="@string/ban_from_conference"
-	    android:visible="false" />
-	<item
-		android:id="@+id/remove_from_room"
+    <item
+        android:id="@+id/remove_membership"
+        android:title="@string/remove_membership"
+        android:visible="false"/>
+    <item
+        android:id="@+id/ban_from_conference"
+        android:title="@string/ban_from_conference"
+        android:visible="false"/>
+    <item
+        android:id="@+id/remove_from_room"
         android:title="@string/remove_from_room"
-		android:visible="false"/>
+        android:visible="false"/>
 </menu>