diff --git a/gfx/layers/CanvasRenderer.h b/gfx/layers/CanvasRenderer.h
index f2856974a5f3..7e03e295b083 100644
--- a/gfx/layers/CanvasRenderer.h
+++ b/gfx/layers/CanvasRenderer.h
@@ -143,7 +143,6 @@ class CanvasRenderer : public RefCounted<CanvasRenderer> {
   std::shared_ptr<BorrowedSourceSurface> BorrowSnapshot(
       bool requireAlphaPremult = true) const;
 
- protected:
   void FirePreTransactionCallback() const;
   void FireDidTransactionCallback() const;
 };
diff --git a/gfx/layers/basic/BasicCanvasLayer.cpp b/gfx/layers/basic/BasicCanvasLayer.cpp
index 19dc6edf175e..5f7399c02047 100644
--- a/gfx/layers/basic/BasicCanvasLayer.cpp
+++ b/gfx/layers/basic/BasicCanvasLayer.cpp
@@ -32,14 +32,15 @@ void BasicCanvasLayer::Paint(DrawTarget* aDT, const Point& aDeviceOffset,
   if (IsHidden()) return;
   // Ignore IsDirty().
 
-  const auto& cr = mCanvasRenderer;
-  MOZ_ASSERT(cr);
-  const auto snapshot = cr->BorrowSnapshot();
+  MOZ_ASSERT(mCanvasRenderer);
+  mCanvasRenderer->FirePreTransactionCallback();
+
+  const auto snapshot = mCanvasRenderer->BorrowSnapshot();
   if (!snapshot) return;
   const auto& surface = snapshot->mSurf;
 
   Maybe<Matrix> oldTM;
-  if (!cr->YIsDown()) {
+  if (!mCanvasRenderer->YIsDown()) {
     // y-flip
     oldTM = Some(aDT->GetTransform());
     aDT->SetTransform(Matrix(*oldTM)
@@ -57,6 +58,8 @@ void BasicCanvasLayer::Paint(DrawTarget* aDT, const Point& aDeviceOffset,
     aDT->SetTransform(*oldTM);
   }
 
+  mCanvasRenderer->FireDidTransactionCallback();
+
   Painted();
 }