1 files changed, 1 insertions, 1 deletions
diff --git a/idiorm.php b/idiorm.php
index 251b53e..9ca1de1 100644
--- a/idiorm.php
+++ b/idiorm.php
@@ -1329,7 +1329,7 @@
 
             if (!$this->_is_new) { // UPDATE
                 // If there are no dirty values, do nothing
-                if (count($values) == 0) {
+                if (empty($values) && empty($this->_expr_fields)) {
                     return true;
                 }
                 $query = $this->_build_update();