diff --git a/include/linux/pfkeyv2.h b/include/linux/pfkeyv2.h
index bac0fb3..d5dd471 100644
--- a/include/linux/pfkeyv2.h
+++ b/include/linux/pfkeyv2.h
@@ -159,7 +159,7 @@
 struct sadb_x_kmprivate {
 	uint16_t	sadb_x_kmprivate_len;
 	uint16_t	sadb_x_kmprivate_exttype;
-	u_int32_t	sadb_x_kmprivate_reserved;
+	uint32_t	sadb_x_kmprivate_reserved;
 } __attribute__((packed));
 /* sizeof(struct sadb_x_kmprivate) == 8 */