--- a/gfx/ipc/CompositorOptions.h
+++ b/gfx/ipc/CompositorOptions.h
@@ -49,17 +49,18 @@ public:
   bool UseAdvancedLayers() const { return mUseAdvancedLayers; }
 
   void SetUseAdvancedLayers(bool aUseAdvancedLayers) {
     mUseAdvancedLayers = aUseAdvancedLayers;
   }
 
   bool operator==(const CompositorOptions& aOther) const {
     return mUseAPZ == aOther.mUseAPZ &&
-           mUseWebRender == aOther.mUseWebRender;
+           mUseWebRender == aOther.mUseWebRender &&
+           mUseAdvancedLayers == aOther.mUseAdvancedLayers;
   }
 
   friend struct IPC::ParamTraits<CompositorOptions>;
 
 private:
   bool mUseAPZ;
   bool mUseWebRender;
   bool mUseAdvancedLayers;