diff --git a/main/autoservice.c b/main/autoservice.c
index b21d1e7011..853c1dfab6 100644
--- a/main/autoservice.c
+++ b/main/autoservice.c
@@ -169,6 +169,7 @@ int ast_autoservice_start(struct ast_channel *chan)
 	} else {
 		/* New entry created */
 		as->chan = chan;
+		ast_set_flag(chan, AST_FLAG_END_DTMF_ONLY);
 		as->use_count = 1;
 		AST_RWLIST_INSERT_HEAD(&aslist, as, list);
 		if (asthread == AST_PTHREADT_NULL) { /* need start the thread */
@@ -211,6 +212,7 @@ int ast_autoservice_stop(struct ast_channel *chan)
 			removed = 1;
 			if (!ast_check_hangup(chan))
 				res = 0;
+			ast_clear_flag(chan, AST_FLAG_END_DTMF_ONLY);
 			break;
 		}
 	}