diff --git a/src/file.c b/src/file.c
index 391a80e..03e4ab4 100644
--- a/src/file.c
+++ b/src/file.c
@@ -374,7 +374,7 @@ static void run_cgi(state *st, char *script, char *arg)
 	}
 
 	/* Didn't work - die */
-	die(st, ERR_ACCESS, NULL);
+	die(st, ERR_ACCESS, "");
 }