Index: src/Parser/TypeData.cpp
===================================================================
--- src/Parser/TypeData.cpp	(revision 7552fdeef475fdf78568b8832b5d1ae15b0f249a)
+++ src/Parser/TypeData.cpp	(revision 5ccc7336506cd07739e57f3df639075f216ba4fb)
@@ -1469,6 +1469,6 @@
 		ast::ObjectDecl * object = strict_dynamic_cast<ast::ObjectDecl *>( member );
 		object->isHidden = ast::EnumDecl::EnumHiding::Hide == ret->hide;
-		if ( ret->isTyped && !ret->base && cur->has_enumeratorValue() ) {
-			SemanticError( td->location, "Enumerator of enum(void) cannot have an explicit initializer value." );
+		if ( ret->isOpague() && cur->has_enumeratorValue() ) {
+			SemanticError( td->location, "Opague cannot have an explicit initializer value." );
 		} else if ( cur->has_enumeratorValue() ) {
 			object->init = new ast::SingleInit(