diff --git a/src/mux_h1.c b/src/mux_h1.c
index c06cec979..537f0f999 100644
--- a/src/mux_h1.c
+++ b/src/mux_h1.c
@@ -1711,7 +1711,6 @@ static size_t h1_process_demux(struct h1c *h1c, struct buffer *buf, size_t count
 	return ret;
 
   err:
-	b_reset(&h1c->ibuf);
 	htx_to_buf(htx, buf);
 	if (h1s->cs)
 		h1s->cs->flags |= CS_FL_EOI;