diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 51a068a..464c6f7 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -404,7 +404,7 @@
 					      const __be64 *a2,
 					      unsigned int len)
 {
-	if (len && ((*a1 ^ *a2) & cpu_to_be64(~0UL) << (64 - len)))
+	if (len && ((*a1 ^ *a2) & cpu_to_be64((~0UL) << (64 - len))))
 		return false;
 	return true;
 }