--- a/gfx/src/gfxCrashReporterUtils.cpp
+++ b/gfx/src/gfxCrashReporterUtils.cpp
@@ -120,18 +120,22 @@ ScopedGfxFeatureReporter::WriteAppNote(c
     gFeaturesAlreadyReported->AppendElement(featureString);
     AppNote(featureString);
   }
 }
 
 void
 ScopedGfxFeatureReporter::AppNote(const nsACString& aMessage)
 {
-  nsCOMPtr<nsIRunnable> r = new AppendAppNotesRunnable(aMessage);
-  NS_DispatchToMainThread(r);
+  if (NS_IsMainThread()) {
+    CrashReporter::AppendAppNotesToCrashReport(aMessage);
+  } else {
+    nsCOMPtr<nsIRunnable> r = new AppendAppNotesRunnable(aMessage);
+    NS_DispatchToMainThread(r);
+  }
 }
   
 } // end namespace mozilla
 
 #else
 
 namespace mozilla {
 void ScopedGfxFeatureReporter::WriteAppNote(char) {}