diff --git a/dom/base/nsGlobalWindowInner.cpp b/dom/base/nsGlobalWindowInner.cpp
index 4eb26c2a527c..609bbd561b01 100644
--- a/dom/base/nsGlobalWindowInner.cpp
+++ b/dom/base/nsGlobalWindowInner.cpp
@@ -867,8 +867,6 @@ public:
 
   void Call()
   {
-    MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
-
     ErrorResult error;
     JS::Rooted<JS::Value> returnVal(RootingCx());
     mCallback->Call(&returnVal, error);