diff --git a/toolkit/components/extensions/webidl-api/ExtensionEventListener.h b/toolkit/components/extensions/webidl-api/ExtensionEventListener.h
index 572162536620..4cc95777bce9 100644
--- a/toolkit/components/extensions/webidl-api/ExtensionEventListener.h
+++ b/toolkit/components/extensions/webidl-api/ExtensionEventListener.h
@@ -155,7 +155,8 @@ class ExtensionListenerCallWorkerRunnable : public dom::WorkerRunnable {
 
  private:
   ~ExtensionListenerCallWorkerRunnable() {
-    NS_ReleaseOnMainThread(mPromiseResult.forget());
+    NS_ReleaseOnMainThread("~ExtensionListenerCallWorkerRunnable",
+                           mPromiseResult.forget());
     ReleaseArgsHolder();
     mListener = nullptr;
   }
diff --git a/xpcom/threads/nsProxyRelease.h b/xpcom/threads/nsProxyRelease.h
index c27722f6264c..69114fbce353 100644
--- a/xpcom/threads/nsProxyRelease.h
+++ b/xpcom/threads/nsProxyRelease.h
@@ -185,13 +185,6 @@ inline NS_HIDDEN_(void)
   NS_ProxyRelease(aName, target, doomed.forget(), aAlwaysProxy);
 }
 
-template <class T>
-inline NS_HIDDEN_(void) NS_ReleaseOnMainThread(already_AddRefed<T> aDoomed,
-                                               bool aAlwaysProxy = false) {
-  NS_ReleaseOnMainThread("NS_ReleaseOnMainThread", std::move(aDoomed),
-                         aAlwaysProxy);
-}
-
 /**
  * Class to safely handle main-thread-only pointers off the main thread.
  *