diff --git a/app/src/main/java/com/nextcloud/talk/activities/CallActivity.java b/app/src/main/java/com/nextcloud/talk/activities/CallActivity.java
index d04f594f3..0e94446b3 100644
--- a/app/src/main/java/com/nextcloud/talk/activities/CallActivity.java
+++ b/app/src/main/java/com/nextcloud/talk/activities/CallActivity.java
@@ -341,7 +341,7 @@ public class CallActivity extends AppCompatActivity {
                 }
             }
 
-            if (localMediaStream.videoTracks.size() > 0) {
+            if (localMediaStream != null && localMediaStream.videoTracks.size() > 0) {
                 localMediaStream.videoTracks.get(0).setEnabled(enable);
             }
 
@@ -356,7 +356,7 @@ public class CallActivity extends AppCompatActivity {
                 message = "audioOn";
             }
 
-            if (localMediaStream.audioTracks.size() > 0) {
+            if (localMediaStream != null && localMediaStream.audioTracks.size() > 0) {
                 localMediaStream.audioTracks.get(0).setEnabled(enable);
             }
         }