diff --git a/fxjs/fxjs_v8.h b/fxjs/fxjs_v8.h
index 34e299b..8283184 100644
--- a/fxjs/fxjs_v8.h
+++ b/fxjs/fxjs_v8.h
@@ -160,7 +160,7 @@
                               v8::NamedPropertySetterCallback pPropPut,
                               v8::NamedPropertyDeleterCallback pPropDel);
   void DefineObjConst(int nObjDefnID,
-                      const wchar_t* sConstName,
+                      const char* sConstName,
                       v8::Local<v8::Value> pDefault);
   void DefineGlobalMethod(const char* sMethodName,
                           v8::FunctionCallback pMethodCall);