diff --git a/core/util.php b/core/util.php
index 965b56a3..7129f0f2 100644
--- a/core/util.php
+++ b/core/util.php
@@ -389,7 +389,7 @@ function _sanitise_environment() {
 		date_default_timezone_set(TIMEZONE);
 	}
 
-	ini_set('zend.assertions', 1);  // generate assertions
+	# ini_set('zend.assertions', 1);  // generate assertions
 	ini_set('assert.exception', 1);  // throw exceptions when failed
 	if(DEBUG) {
 		error_reporting(E_ALL);