diff --git a/main/install/update-db-1.6.x-1.8.0.inc.php b/main/install/update-db-1.6.x-1.8.0.inc.php
index 2d8c904902..9f16274202 100755
--- a/main/install/update-db-1.6.x-1.8.0.inc.php
+++ b/main/install/update-db-1.6.x-1.8.0.inc.php
@@ -44,6 +44,8 @@ if(function_exists('ini_set'))
 {
 	ini_set('memory_limit',-1);
 	ini_set('max_execution_time',0);
+}else{
+	error_log('Update-db script: could not change memory and time limits',0);
 }
 
 /*