diff --git a/sys/src/cmd/ip/torrent.c b/sys/src/cmd/ip/torrent.c
index 374fd97ad..7177266f2 100644
--- a/sys/src/cmd/ip/torrent.c
+++ b/sys/src/cmd/ip/torrent.c
@@ -404,7 +404,7 @@ peer(int fd, int incoming, char *addr)
 		}
 		if((incoming && !i) || (!incoming && i)){
 			n = 20 + 8 + sizeof(infohash);
-			if((n = readn(fd, buf, n)) != n)
+			if(readn(fd, buf, n) != n)
 				return 1;
 			if(memcmp(buf, "\x13BitTorrent protocol", 20))
 				return 0;