Index: uspace/lib/gui/window.h
===================================================================
--- uspace/lib/gui/window.h	(revision 55edba03c94a1f730602809a88e2bfb4b884c7ad)
+++ uspace/lib/gui/window.h	(revision 7a98cef11fb8f3d08a03c92aae4d500d0a75a5d0)
@@ -66,5 +66,6 @@
  * If the window is declared as main, its closure causes termination of the
  * whole application. Note that opened window does not have any surface yet. */
-extern window_t *window_open(char *, bool, bool, const char *, sysarg_t, sysarg_t);
+extern window_t *window_open(const char *, bool, bool, const char *, sysarg_t,
+    sysarg_t);
 
 /**