diff --git a/gfx/layers/ipc/CompositorParent.cpp b/gfx/layers/ipc/CompositorParent.cpp
index 6d42c4b33b4c..745f2f493375 100644
--- a/gfx/layers/ipc/CompositorParent.cpp
+++ b/gfx/layers/ipc/CompositorParent.cpp
@@ -228,7 +228,6 @@ CompositorVsyncObserver::CompositorVsyncObserver(CompositorParent* aCompositorPa
 
 CompositorVsyncObserver::~CompositorVsyncObserver()
 {
-  MOZ_ASSERT(CompositorParent::IsInCompositorThread());
   MOZ_ASSERT(!mIsObservingVsync);
   // The CompositorVsyncDispatcher is cleaned up before this in the nsBaseWidget, which stops vsync listeners
   mCompositorParent = nullptr;