diff --git a/src/conversations/res/values-pl/strings.xml b/src/conversations/res/values-pl/strings.xml
index bf72b7668ff1f713f9997dbe57030f2e4c192b85..954c5f21942d237e0dc68a34aec7f2ee6f399523 100644
--- a/src/conversations/res/values-pl/strings.xml
+++ b/src/conversations/res/values-pl/strings.xml
@@ -8,4 +8,5 @@
     <string name="magic_create_text_on_x">Zostałeś zaproszony do %1$s. Poprowadzimy ciebie przez proces tworzenia konta.\nWybierając %1$s jako dostawcę będziesz mógł komunikować się z innymi użytkownikami podając swój pełny adres XMPP.</string>
     <string name="magic_create_text_fixed">Zostałeś zaproszony do %1$s. Nazwa użytkownika została już dla ciebie wybrana. Poprowadzimy ciebie przez proces tworzenia konta.\nBęziesz mógł komunikować się z innymi użytkownikami podając swój adres XMPP.</string>
     <string name="your_server_invitation">Zaproszenie twojego serwera</string>
-    </resources>
\ No newline at end of file
+    <string name="improperly_formatted_provisioning">Niepoprawnie sformatowany kod zaopatrywania</string>
+</resources>
\ No newline at end of file
diff --git a/src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java b/src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java
index 0fd9ee1874571cce3c7a5a73f289048916d9d56c..0cf2d6f33b3766a9b0e6d60634be803b8552df89 100644
--- a/src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java
@@ -677,18 +677,22 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
             this.binding.endCall.setVisibility(View.INVISIBLE);
             this.binding.acceptCall.setVisibility(View.INVISIBLE);
         } else if (state == RtpEndUserState.INCOMING_CALL) {
+            this.binding.rejectCall.setContentDescription(getString(R.string.dismiss_call));
             this.binding.rejectCall.setOnClickListener(this::rejectCall);
             this.binding.rejectCall.setImageResource(R.drawable.ic_call_end_white_48dp);
             this.binding.rejectCall.setVisibility(View.VISIBLE);
             this.binding.endCall.setVisibility(View.INVISIBLE);
+            this.binding.acceptCall.setContentDescription(getString(R.string.answer_call));
             this.binding.acceptCall.setOnClickListener(this::acceptCall);
             this.binding.acceptCall.setImageResource(R.drawable.ic_call_white_48dp);
             this.binding.acceptCall.setVisibility(View.VISIBLE);
         } else if (state == RtpEndUserState.DECLINED_OR_BUSY) {
+            this.binding.rejectCall.setContentDescription(getString(R.string.exit));
             this.binding.rejectCall.setOnClickListener(this::exit);
             this.binding.rejectCall.setImageResource(R.drawable.ic_clear_white_48dp);
             this.binding.rejectCall.setVisibility(View.VISIBLE);
             this.binding.endCall.setVisibility(View.INVISIBLE);
+            this.binding.acceptCall.setContentDescription(getString(R.string.record_voice_mail));
             this.binding.acceptCall.setOnClickListener(this::recordVoiceMail);
             this.binding.acceptCall.setImageResource(R.drawable.ic_voicemail_white_24dp);
             this.binding.acceptCall.setVisibility(View.VISIBLE);
@@ -698,15 +702,18 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
                 RtpEndUserState.APPLICATION_ERROR,
                 RtpEndUserState.RETRACTED
         ).contains(state)) {
+            this.binding.rejectCall.setContentDescription(getString(R.string.exit));
             this.binding.rejectCall.setOnClickListener(this::exit);
             this.binding.rejectCall.setImageResource(R.drawable.ic_clear_white_48dp);
             this.binding.rejectCall.setVisibility(View.VISIBLE);
             this.binding.endCall.setVisibility(View.INVISIBLE);
+            this.binding.acceptCall.setContentDescription(getString(R.string.try_again));
             this.binding.acceptCall.setOnClickListener(this::retry);
             this.binding.acceptCall.setImageResource(R.drawable.ic_replay_white_48dp);
             this.binding.acceptCall.setVisibility(View.VISIBLE);
         } else {
             this.binding.rejectCall.setVisibility(View.INVISIBLE);
+            this.binding.endCall.setContentDescription(getString(R.string.hang_up));
             this.binding.endCall.setOnClickListener(this::endCall);
             this.binding.endCall.setImageResource(R.drawable.ic_call_end_white_48dp);
             this.binding.endCall.setVisibility(View.VISIBLE);
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index 71eb76f58339dee9dce58b57e8cd24f74f7ead95..09728b7881bfffcdec064b6ce257454868cc4df0 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -933,6 +933,8 @@
     <string name="encrypted_with_omemo">Encrypted with OMEMO</string>
     <string name="encrypted_with_openpgp">Encrypted with OpenPGP</string>
     <string name="not_encrypted">Not encrypted</string>
+    <string name="exit">Exit</string>
+    <string name="record_voice_mail">Record voice mail</string>
     <plurals name="view_users">
         <item quantity="one">View %1$d Participant</item>
         <item quantity="other">View %1$d Participants</item>