diff --git a/net/rds/message.c b/net/rds/message.c
index 90dcdcf..3c610d5 100644
--- a/net/rds/message.c
+++ b/net/rds/message.c
@@ -355,7 +355,7 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in
 	return rm;
 }
 
-int rds_message_zcopy_from_user(struct rds_message *rm, struct iov_iter *from)
+static int rds_message_zcopy_from_user(struct rds_message *rm, struct iov_iter *from)
 {
 	unsigned long sg_off;
 	struct scatterlist *sg;