diff --git a/webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_info_objc.mm b/webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_info_objc.mm
index 18ff5ed12f..7b46aec192 100644
--- a/webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_info_objc.mm
+++ b/webrtc/modules/video_capture/mac/qtkit/video_capture_qtkit_info_objc.mm
@@ -60,11 +60,10 @@ using namespace webrtc;
 {
     NSString* strTitle = [NSString stringWithFormat:@"%s", dialogTitleUTF8];
     NSString* strButton = @"Alright";
-    NSString* strMessage = [NSString stringWithFormat:@"Device %s is capturing", deviceUniqueIdUTF8];
     NSAlert* alert = [NSAlert alertWithMessageText:strTitle
                       defaultButton:strButton
                       alternateButton:nil otherButton:nil
-                      informativeTextWithFormat:strMessage];
+                      informativeTextWithFormat:@"Device %s is capturing", deviceUniqueIdUTF8];
     [alert setAlertStyle:NSInformationalAlertStyle];
     [alert runModal];
     return [NSNumber numberWithInt:0];