--- a/QTfrontend/sdlkeys.h	Wed Jan 09 16:27:57 2019 -0500
+++ b/QTfrontend/sdlkeys.h	Wed Jan 09 22:09:27 2019 +0100
@@ -30,5 +30,6 @@
 extern char controllerdown[128];
 extern char controllerleft[128];
 extern char controllerright[128];
+extern char unboundcontrol[128];
 
 #endif