diff --git a/js/xpconnect/src/XPCComponents.cpp b/js/xpconnect/src/XPCComponents.cpp
index 1995fd8c885e..c46b43108e9d 100644
--- a/js/xpconnect/src/XPCComponents.cpp
+++ b/js/xpconnect/src/XPCComponents.cpp
@@ -2731,7 +2731,6 @@ nsXPCComponents_Utils::LookupMethod(const JS::Value& object,
         // Alright, now do the lookup.
         *retval = JSVAL_VOID;
         JSPropertyDescriptor desc;
-        memset(&desc, 0, sizeof(desc)); // This will be fixed soon in JSAPI.
         if (!JS_GetPropertyDescriptorById(cx, xray, methodId, 0, &desc))
             return NS_ERROR_FAILURE;