diff --git a/packet.c b/packet.c
index 248fb9bd0..d81d01a1c 100644
--- a/packet.c
+++ b/packet.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: packet.c,v 1.304 2022/01/01 01:55:30 jsg Exp $ */
+/* $OpenBSD: packet.c,v 1.305 2022/01/17 22:56:04 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -794,7 +794,7 @@ uncompress_buffer(struct ssh *ssh, struct sshbuf *in, struct sshbuf *out)
 		ssh->state->compression_in_stream.avail_out = sizeof(buf);
 
 		status = inflate(&ssh->state->compression_in_stream,
-		    Z_PARTIAL_FLUSH);
+		    Z_SYNC_FLUSH);
 		switch (status) {
 		case Z_OK:
 			if ((r = sshbuf_put(out, buf, sizeof(buf) -