diff -Naur asterisk.old/cli.c asterisk.new/cli.c
--- asterisk.old/cli.c	2005-08-12 13:21:49.000000000 +0200
+++ asterisk.new/cli.c	2005-08-12 13:24:42.000000000 +0200
@@ -1108,7 +1108,7 @@
 		e = find_cli(argv + 1, 1);
 		if (e) {
 			if (e->usage)
-				ast_cli(fd, e->usage);
+				ast_cli(fd, "%s", e->usage);
 			else {
 				join(fullcmd, sizeof(fullcmd), argv+1);
 				ast_cli(fd, "No help text available for '%s'.\n", fullcmd);