--- mycap.module.orig	2007-05-25 23:09:38.000000000 +0200
+++ mycap.module	2007-05-25 23:08:47.000000000 +0200
@@ -198,7 +198,7 @@
  */
 function mycap_image_settings_form() {
   $form = array(
-    'mycap_allowed_chars' => array(
+    'mycap_image_allowed_chars' => array(
       '#type' => 'textfield',
       '#title' => t('Characters to appear in the image'),
       '#default_value' => variable_get('mycap_image_allowed_chars', 'ABCEFHKMNPQRSTXYZ345678'),