diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 784129f..874ca02 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1340,9 +1340,9 @@
 				     void *to, int len);
 extern int	       skb_store_bits(const struct sk_buff *skb, int offset,
 				      void *from, int len);
-extern unsigned int    skb_copy_and_csum_bits(const struct sk_buff *skb,
+extern __wsum	       skb_copy_and_csum_bits(const struct sk_buff *skb,
 					      int offset, u8 *to, int len,
-					      unsigned int csum);
+					      __wsum csum);
 extern void	       skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to);
 extern void	       skb_split(struct sk_buff *skb,
 				 struct sk_buff *skb1, const u32 len);