diff --git a/src/plugins/cpptools/ModelManagerInterface.h b/src/plugins/cpptools/ModelManagerInterface.h
index 7198a14b0ab68ac0381819b771e7d6bffd15bda0..0d0bdf6f2d75e4c5fc87ac0a45f4e8c39f83301d 100644
--- a/src/plugins/cpptools/ModelManagerInterface.h
+++ b/src/plugins/cpptools/ModelManagerInterface.h
@@ -78,7 +78,12 @@ public:
         {}
 
     public: // enums and types
-        enum Language { CXX, CXX11, C99, C89 };
+        enum Language {
+            C89 = 1,
+            C99 = 2,
+            CXX = 3,
+            CXX11 = 4
+        };
         enum QtVersion {
             UnknownQt = -1,
             NoQt = 0,