--- a/gfx/layers/basic/BasicCompositor.cpp
+++ b/gfx/layers/basic/BasicCompositor.cpp
@@ -1033,22 +1033,17 @@ BasicCompositor::TryToEndRemoteDrawing(b
                              [self]() { self->TryToEndRemoteDrawing(); });
     MessageLoop::current()->PostDelayedTask(runnable.forget(), retryMs);
     return;
   }
 
   if (mRenderTarget->mDrawTarget != mDrawTarget) {
     // Note: Most platforms require us to buffer drawing to the widget surface.
     // That's why we don't draw to mDrawTarget directly.
-    RefPtr<SourceSurface> source;
-    if (mRenderTarget->mDrawTarget != mDrawTarget) {
-      source = mWidget->EndBackBufferDrawing();
-    } else {
-      source = mRenderTarget->mDrawTarget->Snapshot();
-    }
+    RefPtr<SourceSurface> source = mWidget->EndBackBufferDrawing();
     RefPtr<DrawTarget> dest(mTarget ? mTarget : mDrawTarget);
 
     nsIntPoint offset = mTarget ? mTargetBounds.TopLeft() : nsIntPoint();
 
     // The source DrawTarget is clipped to the invalidation region, so we have
     // to copy the individual rectangles in the region or else we'll draw blank
     // pixels.
     for (auto iter = mInvalidRegion.RectIter(); !iter.Done(); iter.Next()) {