--- a/gfx/2d/DrawTargetRecording.h
+++ b/gfx/2d/DrawTargetRecording.h
@@ -25,17 +25,17 @@ public:
   virtual BackendType GetBackendType() const override { return BackendType::RECORDING; }
   virtual bool IsRecording() const override { return true; }
 
   virtual already_AddRefed<SourceSurface> Snapshot() override;
   virtual already_AddRefed<SourceSurface> IntoLuminanceSource(LuminanceType aLuminanceType, float aOpacity) override;
 
   virtual void DetachAllSnapshots() override;
 
-  virtual IntSize GetSize() override { return mFinalDT->GetSize(); }
+  virtual IntSize GetSize() override { return mSize; }
 
   /* Ensure that the DrawTarget backend has flushed all drawing operations to
    * this draw target. This must be called before using the backing surface of
    * this draw target outside of GFX 2D code.
    */
   virtual void Flush() override { mFinalDT->Flush(); }
 
   /*