diff --git a/sys/kern/sysv_sem.c b/sys/kern/sysv_sem.c
--- a/sys/kern/sysv_sem.c
+++ b/sys/kern/sysv_sem.c
@@ -710,7 +710,7 @@
 	AUDIT_ARG_SVIPC_ID(semid);
 
 	rpr = sem_find_prison(td->td_ucred);
-	if (sem == NULL)
+	if (rpr == NULL)
 		return (ENOSYS);
 
 	array = NULL;
@@ -1130,7 +1130,7 @@
 	AUDIT_ARG_SVIPC_ID(usemid);
 
 	rpr = sem_find_prison(td->td_ucred);
-	if (sem == NULL)
+	if (rpr == NULL)
 		return (ENOSYS);
 
 	semid = IPCID_TO_IX(usemid);	/* Convert back to zero origin */