diff --git a/res/res_monitor.c b/res/res_monitor.c
index 959a80c3ff766fa26bcec889ff73ea2acd078cd9..febdab4a61ab471d40a15b520225ba154d865a4d 100644
--- a/res/res_monitor.c
+++ b/res/res_monitor.c
@@ -509,7 +509,9 @@ int AST_OPTIONAL_API_NAME(ast_monitor_stop)(struct ast_channel *chan, int need_l
 	                        chan->name,
 	                        chan->uniqueid
 	                        );
+		pbx_builtin_setvar_helper(chan, "MONITORED", NULL);
 	}
+	pbx_builtin_setvar_helper(chan, "AUTO_MONITOR", NULL);
 
 	UNLOCK_IF_NEEDED(chan, need_lock);