diff --git a/include/linux/udp.h b/include/linux/udp.h
index 564f3b0..7e08c07 100644
--- a/include/linux/udp.h
+++ b/include/linux/udp.h
@@ -23,7 +23,7 @@
 	__be16	source;
 	__be16	dest;
 	__be16	len;
-	__be16	check;
+	__sum16	check;
 };
 
 /* UDP socket options */