--- a/dom/base/nsINode.h
+++ b/dom/base/nsINode.h
@@ -82,17 +82,17 @@ class Text;
 class TextOrElementOrDocument;
 struct DOMPointInit;
 } // namespace dom
 } // namespace mozilla
 
 #define NODE_FLAG_BIT(n_) \
   (nsWrapperCache::FlagsType(1U) << (WRAPPER_CACHE_FLAGS_BITS_USED + (n_)))
 
-enum {
+enum NodeFlags {
   // This bit will be set if the node has a listener manager.
   NODE_HAS_LISTENERMANAGER =              NODE_FLAG_BIT(0),
 
   // Whether this node has had any properties set on it
   NODE_HAS_PROPERTIES =                   NODE_FLAG_BIT(1),
 
   // Whether this node is the root of an anonymous subtree.  Note that this
   // need not be a native anonymous subtree.  Any anonymous subtree, including