diff --git a/Classes/MainScreenWithVideoPreview.m b/Classes/MainScreenWithVideoPreview.m
index 118c6af0a..c35983820 100644
--- a/Classes/MainScreenWithVideoPreview.m
+++ b/Classes/MainScreenWithVideoPreview.m
@@ -128,10 +128,18 @@
 
 
 -(void) showPreview:(BOOL) show {
+    LinphoneCore* lc;
+    @try {
+        lc = [LinphoneManager getLc];
+    }
+    @catch (NSException *exception) {
+        return;
+    }
+    
     bool enableVideo = [[NSUserDefaults standardUserDefaults] boolForKey:@"enable_video_preference"];
     
     if (enableVideo) {
-        LinphoneCall* call = linphone_core_get_current_call([LinphoneManager getLc]);
+        LinphoneCall* call = linphone_core_get_current_call(lc);
         if (show && call && linphone_call_params_video_enabled(linphone_call_get_current_params(call))) {
             return;
         }
diff --git a/Classes/PhoneViewController.m b/Classes/PhoneViewController.m
index 9d1f45a12..518f3bcd9 100644
--- a/Classes/PhoneViewController.m
+++ b/Classes/PhoneViewController.m
@@ -113,7 +113,7 @@
             [callShort setEnabled:!linphone_core_sound_resources_locked([LinphoneManager getLc])];
     } @catch (NSException* exc) {
         // R.A.S: linphone core si simply not ready...
-        ms_warning("Exception %s: %s", 
+        ms_warning("Catched exception %s: %s", 
                    [exc.name cStringUsingEncoding:[NSString defaultCStringEncoding]], 
                    [exc.reason cStringUsingEncoding:[NSString defaultCStringEncoding]]);
     }