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 7b46aec192..2b18e1eca1 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
@@ -155,11 +155,14 @@ using namespace webrtc;
 - (void)checkOSSupported
 {
     Class osSupportedTest = NSClassFromString(@"QTCaptureSession");
-    _OSSupportedInfo = NO;
     if(nil == osSupportedTest)
     {
+      _OSSupportedInfo = NO;
+    }
+    else
+    {
+      _OSSupportedInfo = YES;
     }
-    _OSSupportedInfo = YES;
 }
 
 /// ***** Retrieves the number of capture devices currently available