--- a/gfx/layers/client/ClientLayerManager.cpp
+++ b/gfx/layers/client/ClientLayerManager.cpp
@@ -202,21 +202,26 @@ ClientLayerManager::BeginTransactionWith
   targetBounds.x = targetBounds.y = 0;
   mForwarder->BeginTransaction(targetBounds, mTargetRotation, orientation);
 
   // If we're drawing on behalf of a context with async pan/zoom
   // enabled, then the entire buffer of painted layers might be
   // composited (including resampling) asynchronously before we get
   // a chance to repaint, so we have to ensure that it's all valid
   // and not rotated.
+  //
+  // Desktop does not support async zoom yet, so we ignore this for those
+  // platforms.
+#if defined(MOZ_WIDGET_ANDROID) || defined(MOZ_WIDGET_GONK)
   if (mWidget) {
     if (dom::TabChild* window = mWidget->GetOwningTabChild()) {
       mCompositorMightResample = window->IsAsyncPanZoomEnabled();
     }
   }
+#endif
 
   // If we have a non-default target, we need to let our shadow manager draw
   // to it. This will happen at the end of the transaction.
   if (aTarget && XRE_GetProcessType() == GeckoProcessType_Default) {
     mShadowTarget = aTarget;
   } else {
     NS_ASSERTION(!aTarget,
                  "Content-process ClientLayerManager::BeginTransactionWithTarget not supported");