diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 97b3257566671a0e54b203db7c122f0c70e29fad..0b3dcba3d97d29da43ceb19384024a4d77affcad 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -64,7 +64,7 @@ struct nfs_client {
 	/* Our own IP address, as a null-terminated string.
 	 * This is used to generate the clientid, and the callback address.
 	 */
-	char			cl_ipaddr[16];
+	char			cl_ipaddr[48];
 	unsigned char		cl_id_uniquifier;
 #endif
 };