diff --git a/drivers/atmodem/voicecall.c b/drivers/atmodem/voicecall.c
index 3d8fb590..885cbfa3 100644
--- a/drivers/atmodem/voicecall.c
+++ b/drivers/atmodem/voicecall.c
@@ -872,6 +872,9 @@ static void at_voicecall_remove(struct ofono_voicecall *vc)
 {
 	struct voicecall_data *vd = ofono_voicecall_get_data(vc);
 
+	if (vd->clcc_source)
+		g_source_remove(vd->clcc_source);
+
 	g_slist_foreach(vd->calls, (GFunc) g_free, NULL);
 	g_slist_free(vd->calls);