diff --git a/sys/kern/sys_capability.c b/sys/kern/sys_capability.c
index 456f7ac7e08..7a820179633 100644
--- a/sys/kern/sys_capability.c
+++ b/sys/kern/sys_capability.c
@@ -576,7 +576,7 @@ sys_cap_rights_limit(struct thread *td, struct cap_rights_limit_args *uap)
 }
 
 int
-sys___cap_rights_get(struct thread *td, struct cap___rights_get_args *uap)
+sys___cap_rights_get(struct thread *td, struct __cap_rights_get_args *uap)
 {
 
 	return (ENOSYS);