diff --git a/system/database.php b/system/database.php
index 494d74f..0a3d2c6 100644
--- a/system/database.php
+++ b/system/database.php
@@ -672,10 +672,10 @@ if(!check_function_exists("get_timediff_on_query")) {
 }
 
 // temporary table
-function exec_db_temp_create($scheme=array(), $options=array()) {
+function exec_db_temp_create($schemes=array(), $options=array()) {
     $_tablename = make_random_id();
     $_schemes = array();
-    foreach($scheme as $k=>$v) {
+    foreach($schemes as $k=>$v) {
         if(is_array($v)) {
             $_schemes[] = sprintf("%s %s(%s)", $k, $v[0], $v[1]);
         }