diff --git a/imagefield_crop.module b/imagefield_crop.module
index bc574af..79d48ba 100644
--- a/imagefield_crop.module
+++ b/imagefield_crop.module
@@ -129,15 +129,14 @@ function _imagefield_crop_widget_resolution_validate($element, &$form_state) {
 
 function _imagefield_crop_widget_enforce_ratio_validate($element, &$form_state) {
   $settings = $form_state['values']['instance']['widget']['settings'];
-  if ($settings['resolution']['x'] && !$element['#value']) {
+  if ($settings['resolution'] && !$element['#value']) {
     drupal_set_message(t('Output resolution is defined, but not enforced. Final images might be distroted'));
   }
 }
 
 function _imagefield_crop_widget_enforce_minimum_validate($element, &$form_state) {
   $settings = $form_state['values']['instance']['widget']['settings'];
-  $rw = ($settings['resolution']['x']) ? $settings['resolution']['x'] : 0;
-  $rh = ($settings['resolution']['y']) ? $settings['resolution']['y'] : 0;
+  list($rw, $rh) = !empty($settings['resolution']) ? explode('x', $settings['resolution']): array(0, 0);
 
   if ($settings['enforce_minimum'] &&
       (!is_numeric($rw) || intval($rw) != $rw || $rw <= 0 ||