Signed-off-by: Alejandro Colomar <alx@kernel.org>
---
 man2/semop.2 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/man2/semop.2 b/man2/semop.2
index ebe37a55c..ad184829e 100644
--- a/man2/semop.2
+++ b/man2/semop.2
@@ -24,7 +24,7 @@ .SH SYNOPSIS
 .PP
 .BI "int semop(int " semid ", struct sembuf *" sops ", size_t " nsops );
 .BI "int semtimedop(int " semid ", struct sembuf *" sops ", size_t " nsops ,
-.BI "               const struct timespec *" timeout );
+.BI "               const struct timespec *_Nullable " timeout );
 .fi
 .PP
 .RS -4
-- 
2.38.1