diff --git a/include/proto/channel.h b/include/proto/channel.h
index cf8505899..b2cd5c374 100644
--- a/include/proto/channel.h
+++ b/include/proto/channel.h
@@ -545,6 +545,7 @@ static inline void channel_check_timeouts(struct channel *chn)
 static inline void channel_erase(struct channel *chn)
 {
 	chn->to_forward = 0;
+	chn->output = 0;
 	b_reset(&chn->buf);
 }