diff --git a/include/proto/channel.h b/include/proto/channel.h
index 304a9357a0..bcf8e39410 100644
--- a/include/proto/channel.h
+++ b/include/proto/channel.h
@@ -159,27 +159,6 @@ static inline int channel_is_rewritable(const struct channel *chn)
 	return rem >= 0;
 }
 
-/* Returns non-zero if the channel is congested with data in transit waiting
- * for leaving, indicating to the caller that it should wait for the reserve to
- * be released before starting to process new data in case it needs the ability
- * to append data. This is meant to be used while waiting for a clean response
- * buffer before processing a request.
- */
-static inline int channel_congested(const struct channel *chn)
-{
-	if (!chn->buf->o)
-		return 0;
-
-	if (!channel_is_rewritable(chn))
-		return 1;
-
-	if (chn->buf->p + chn->buf->i >
-	    chn->buf->data + chn->buf->size - global.tune.maxrewrite)
-		return 1;
-
-	return 0;
-}
-
 /* Tells whether data are likely to leave the buffer. This is used to know when
  * we can safely ignore the reserve since we know we cannot retry a connection.
  * It returns zero if data are blocked, non-zero otherwise.