diff --git a/ext/opcache/zend_accelerator_module.c b/ext/opcache/zend_accelerator_module.c
index 16fe80c9b40..4d4de77993c 100644
--- a/ext/opcache/zend_accelerator_module.c
+++ b/ext/opcache/zend_accelerator_module.c
@@ -768,7 +768,10 @@ static ZEND_FUNCTION(opcache_reset)
 		RETURN_FALSE;
 	}
 
+	/* exclusive lock */
+	zend_shared_alloc_lock();
 	zend_accel_schedule_restart(ACCEL_RESTART_USER);
+	zend_shared_alloc_unlock();
 	RETURN_TRUE;
 }