Index: res/res_musiconhold.c
===================================================================
--- res/res_musiconhold.c	(revision 93179)
+++ res/res_musiconhold.c	(working copy)
@@ -1556,7 +1556,14 @@
 
 static int unload_module(void)
 {
-	return -1;
+	ast_uninstall_music_functions();
+	ast_moh_destroy();
+	ast_unregister_application(wait_moh);
+	ast_unregister_application(set_moh);
+	ast_unregister_application(start_moh);
+	ast_unregister_application(stop_moh);
+	ast_cli_unregister_multiple(cli_moh, sizeof(cli_moh) / sizeof(struct ast_cli_entry));
+	return 0;
 }
 
 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Music On Hold Resource",