diff --git a/src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java b/src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java
index 56839d501..7f046def8 100644
--- a/src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java
@@ -149,7 +149,7 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
 
     @Override
     public boolean onKeyDown(final int keyCode, final KeyEvent event) {
-        if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN){
+        if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
             if (xmppConnectionService != null) {
                 if (xmppConnectionService.getNotificationService().stopSoundAndVibration()) {
                     return true;
@@ -489,8 +489,7 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
             return;
         }
         //TODO apparently this method is not getting called on Android 10 when using the task switcher
-        final boolean emptyReference = rtpConnectionReference == null || rtpConnectionReference.get() == null;
-        if (emptyReference && xmppConnectionService != null) {
+        if (emptyReference(rtpConnectionReference) && xmppConnectionService != null) {
             retractSessionProposal();
         }
     }
@@ -1077,7 +1076,7 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
             updateRtpSessionProposalState(account, with, state);
             return;
         }
-        if (this.rtpConnectionReference == null) {
+        if (emptyReference(this.rtpConnectionReference)) {
             if (END_CARD.contains(state)) {
                 Log.d(Config.LOGTAG, "not reinitializing session");
                 return;
@@ -1175,4 +1174,8 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
         intent.putExtra(EXTRA_LAST_ACTION, media.contains(Media.VIDEO) ? ACTION_MAKE_VIDEO_CALL : ACTION_MAKE_VOICE_CALL);
         setIntent(intent);
     }
+
+    private static boolean emptyReference(final WeakReference<?> weakReference) {
+        return weakReference == null || weakReference.get() == null;
+    }
 }