diff --git a/src/msgb.c b/src/msgb.c
index 9117a0ad0..a60e2ffa5 100644
--- a/src/msgb.c
+++ b/src/msgb.c
@@ -85,4 +85,6 @@ void msgb_reset(struct msgb *msg)
 	msg->l2h = NULL;
 	msg->l3h = NULL;
 	msg->l4h = NULL;
+
+	memset(&msg->cb, 0, sizeof(msg->cb));
 }