1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index b95331e6c077..f2ed13c2125f 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -121,7 +121,7 @@ static __u32 check_tcp_syn_cookie(__u32 cookie, __be32 saddr, __be32 daddr,
         cookie -= cookie_hash(saddr, daddr, sport, dport, 0, 0) + sseq;
 
         /* Cookie is now reduced to (count * 2^24) ^ (hash % 2^24) */
-        diff = (count - (cookie >> COOKIEBITS)) & ((__u32) - 1 >> COOKIEBITS);
+        diff = (count - (cookie >> COOKIEBITS)) & ((__u32) -1 >> COOKIEBITS);
         if (diff >= MAX_SYNCOOKIE_AGE)
                 return (__u32)-1;