diff --git a/max_image_size.admin.inc b/max_image_size.admin.inc
index e273c50..e869550 100644
--- a/max_image_size.admin.inc
+++ b/max_image_size.admin.inc
@@ -42,7 +42,7 @@ function max_image_size_system_settings_form() {
   $form['max_image_size_filesize_threshold'] = array(
     '#type' => 'textfield',
     '#title' => t('Filesize threshold'),
-    '#description' => t('The minimum size (in bytes) before the dimensions of an image are checked. Use 0 or leave blank to disable this feature.'),
+    '#description' => t('The minimum size (in bytes) before the dimensions of an image are checked. Leave blank to disable this feature.'),
     '#default_value' => variable_get('max_image_size_filesize_threshold'),
     '#size' => 5,
     '#maxlength' => 6,
@@ -77,15 +77,13 @@ function max_image_size_system_settings_form() {
       format_plural($pending, 'There is one image not processed.', 'There are @count images not processed.')),
   );
 
-  $form['#submit'][] = 'max_image_size_system_settings_form_submit';
-
   return system_settings_form($form);
 }
 
 /**
- * Form submission handler.
+ * Form validation.
  */
-function max_image_size_system_settings_form_submit($form, &$form_state) {
+function max_image_size_system_settings_form_validate($form, &$form_state) {
 
   // Again state that the dimension settings are very important and the process
   // is non-reversible.