diff --git a/gfx/layers/composite/CompositableHost.h b/gfx/layers/composite/CompositableHost.h
index e9b64b9142b2..781f49b322ac 100644
--- a/gfx/layers/composite/CompositableHost.h
+++ b/gfx/layers/composite/CompositableHost.h
@@ -265,7 +265,6 @@ public:
         aLayer == mLayer ||
         aFlags & FORCE_DETACH) {
       SetLayer(nullptr);
-      SetCompositor(nullptr);
       mAttached = false;
       mKeepAttached = false;
       if (mBackendData) {