diff --git a/src/system/kernel/posix/xsi_semaphore.cpp b/src/system/kernel/posix/xsi_semaphore.cpp
index c685afc059..8068acf088 100644
--- a/src/system/kernel/posix/xsi_semaphore.cpp
+++ b/src/system/kernel/posix/xsi_semaphore.cpp
@@ -1268,6 +1268,7 @@ _user_xsi_semop(int semaphoreID, struct sembuf *ops, size_t numOps)
 			XsiSemaphore *semaphore = semaphoreSet->Semaphore(semaphoreNumber);
 			semaphore->SetPid(getpid());
 		}
+		semaphoreSet->SetLastSemopTime();
 	}
 	return result;
 }