--- a/gfx/layers/apz/src/APZCTreeManager.cpp
+++ b/gfx/layers/apz/src/APZCTreeManager.cpp
@@ -2528,19 +2528,18 @@ APZCTreeManager::BuildOverscrollHandoffC
   }
 
   return result;
 }
 
 void
 APZCTreeManager::SetLongTapEnabled(bool aLongTapEnabled)
 {
-  APZThreadUtils::RunOnControllerThread(
-    NewRunnableFunction("SetLongTapEnabledRunnable",
-                        GestureEventListener::SetLongTapEnabled, aLongTapEnabled));
+  APZThreadUtils::AssertOnControllerThread();
+  GestureEventListener::SetLongTapEnabled(aLongTapEnabled);
 }
 
 RefPtr<HitTestingTreeNode>
 APZCTreeManager::FindScrollThumbNode(const AsyncDragMetrics& aDragMetrics)
 {
   RecursiveMutexAutoLock lock(mTreeLock);
 
   return DepthFirstSearch<ReverseIterator>(mRootNode.get(),

--- a/gfx/layers/ipc/APZCTreeManagerParent.cpp
+++ b/gfx/layers/ipc/APZCTreeManagerParent.cpp
@@ -200,16 +200,22 @@ APZCTreeManagerParent::RecvStopAutoscrol
         mTreeManager,
         &IAPZCTreeManager::StopAutoscroll,
         aGuid));
 
   return IPC_OK();
 }
 
 mozilla::ipc::IPCResult
-APZCTreeManagerParent::RecvSetLongTapEnabled(const bool& aTapGestureEnabled)
+APZCTreeManagerParent::RecvSetLongTapEnabled(const bool& aLongTapEnabled)
 {
-  mTreeManager->SetLongTapEnabled(aTapGestureEnabled);
+  APZThreadUtils::RunOnControllerThread(
+      NewRunnableMethod<bool>(
+        "layers::IAPZCTreeManager::SetLongTapEnabled",
+        mTreeManager,
+        &IAPZCTreeManager::SetLongTapEnabled,
+        aLongTapEnabled));
+
   return IPC_OK();
 }
 
 } // namespace layers
 } // namespace mozilla