diff --git a/include/linux/keyctl.h b/include/linux/keyctl.h
index 8d7c59a..ec8f3d6 100644
--- a/include/linux/keyctl.h
+++ b/include/linux/keyctl.h
@@ -46,5 +46,6 @@
 #define KEYCTL_INSTANTIATE		12	/* instantiate a partially constructed key */
 #define KEYCTL_NEGATE			13	/* negate a partially constructed key */
 #define KEYCTL_SET_REQKEY_KEYRING	14	/* set default request-key keyring */
+#define KEYCTL_SET_TIMEOUT		15	/* set key timeout */
 
 #endif /*  _LINUX_KEYCTL_H */