diff --git a/src/modems/hayes.c b/src/modems/hayes.c
index 2b687d9..b330b61 100644
--- a/src/modems/hayes.c
+++ b/src/modems/hayes.c
@@ -609,6 +609,8 @@ static int _hayes_request(Hayes * hayes, ModemRequest * request)
 static int _hayes_start(Hayes * hayes, unsigned int retry)
 {
 	hayes->retry = retry;
+	if(hayes->source != 0)
+		g_source_remove(hayes->source);
 	hayes->source = g_idle_add(_on_reset, &hayes->channel);
 	return 0;
 }