1 files changed, 3 insertions, 2 deletions
diff --git a/dom/cache/CacheStorage.cpp b/dom/cache/CacheStorage.cpp
index e2622fafa2..b5647ba791 100644
--- a/dom/cache/CacheStorage.cpp
+++ b/dom/cache/CacheStorage.cpp
@@ -467,8 +467,9 @@ already_AddRefed<CacheStorage> CacheStorage::Constructor(
   static_assert(
       CHROME_ONLY_NAMESPACE == (uint32_t)CacheStorageNamespace::Chrome,
       "Chrome namespace should match webidl Chrome enum");
-  static_assert(NUMBER_OF_NAMESPACES == CacheStorageNamespaceValues::Count,
-                "Number of namespace should match webidl count");
+  static_assert(
+      NUMBER_OF_NAMESPACES == ContiguousEnumSize<CacheStorageNamespace>::value,
+      "Number of namespace should match webidl count");
 
   Namespace ns = static_cast<Namespace>(aNamespace);
   nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());