1 files changed, 2 insertions, 2 deletions

diff --git a/idiorm.php b/idiorm.php
index 9424d4a..7dbf9af 100644
--- a/idiorm.php
+++ b/idiorm.php
@@ -1267,7 +1267,7 @@
             $query = array();
 
             // remove any expression fields as they are already baked into the query
-            $values = array_diff_key($this->_dirty_fields, $this->_expr_fields);
+            $values = array_values(array_diff_key($this->_dirty_fields, $this->_expr_fields));
 
             if (!$this->_is_new) { // UPDATE
                 // If there are no dirty values, do nothing
@@ -1493,4 +1493,4 @@
     /**
      * A placeholder for exceptions eminating from the IdiormString class
      */
-    class IdiormStringException extends Exception {}
\ No newline at end of file
+    class IdiormStringException extends Exception {}