diff --git a/ext/fox16_c/FXRbApp.cpp b/ext/fox16_c/FXRbApp.cpp
index 6a61bc4cc32b7ee57769039def468361a5636ea4..11d8bb5ae0027341807f358cc08e12bf2513d2ec 100644
--- a/ext/fox16_c/FXRbApp.cpp
+++ b/ext/fox16_c/FXRbApp.cpp
@@ -55,7 +55,7 @@ FXRbApp::FXRbApp(const FXchar* appname,const FXchar* vendor) : FXApp(appname,ven
 // Constructor that also calls FXApp::init()
 FXRbApp* FXRbApp::constructAndInit(const FXchar* appname,const FXchar* vendor){
   int argc=1;
-  static char* argv[]={"",0};
+  static char* argv[]={(char*)"",0};
   FXRbApp* app=new FXRbApp(appname,vendor);
   app->FXApp::init(argc,argv);
   return app;