diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index 639fbc0..8646b64 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -7298,7 +7298,7 @@
 {
 	struct iphdr *ip = lro->iph;
 	struct tcphdr *tcp = lro->tcph;
-	u16 nchk;
+	__sum16 nchk;
 	struct stat_block *statinfo = sp->mac_control.stats_info;
 	DBG_PRINT(INFO_DBG,"%s: Been here...\n", __FUNCTION__);