diff --git a/src/tools/moc/generator.cpp b/src/tools/moc/generator.cpp
index 6d43a5d9eb3..78cd6451cb5 100644
--- a/src/tools/moc/generator.cpp
+++ b/src/tools/moc/generator.cpp
@@ -233,6 +233,7 @@ void Generator::generateCode()
             QByteArray alias = cdef->flagAliases.value(def.name);
             if (cdef->enumDeclarations.contains(alias)) {
                 def.name = alias;
+                def.flags |= cdef->enumDeclarations[alias];
                 enumList += def;
             }
         }