diff --git a/src/main.c b/src/main.c
index 33a14fcbf..00a0ded0f 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2790,7 +2790,7 @@ init_corba_with_args (int *argc, char **argv, poptContext *ctx)
 
 #ifndef HAVE_CORBA
 void
-corba_create_window (const char *startup_dir)
+corba_create_window (char *startup_dir)
 {
 	/* nothing */
 }