diff --git a/kernel/syscall.c b/kernel/syscall.c
index 5d35c8a2..24e07488 100644
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -4231,7 +4231,6 @@ perf_ioctl(struct mckfd *sfd, ihk_mc_user_context_t *ctx)
 {
 	unsigned int cmd = ihk_mc_syscall_arg1(ctx);
 	struct mc_perf_event *event = (struct mc_perf_event*)sfd->data;
-	int counter_id = event->counter_id;
 	struct mcs_rwlock_node_irqsave lock;
 	struct process *proc;
 
@@ -4279,9 +4278,6 @@ perf_ioctl(struct mckfd *sfd, ihk_mc_user_context_t *ctx)
 		if(event->attr.inherit)
 			return -EINVAL;
 
-		event->count += event->attr.sample_freq;
-		ihk_mc_perfctr_set(counter_id, event->attr.sample_freq * -1);
-
 		perf_start(event);
 
 		break;