diff --git a/drivers/net/cxgb4/t4_hw.c b/drivers/net/cxgb4/t4_hw.c
index bb813d9..e97521c 100644
--- a/drivers/net/cxgb4/t4_hw.c
+++ b/drivers/net/cxgb4/t4_hw.c
@@ -2408,7 +2408,7 @@
 		if (index < NEXACT_MAC)
 			ret++;
 		else if (hash)
-			*hash |= (1 << hash_mac_addr(addr[i]));
+			*hash |= (1ULL << hash_mac_addr(addr[i]));
 	}
 	return ret;
 }