diff --git a/collapsiblock.module b/collapsiblock.module
index 0ec489e..3fc3754 100644
--- a/collapsiblock.module
+++ b/collapsiblock.module
@@ -17,7 +17,7 @@ function collapsiblock_init() {
     $theme_settings = array_merge(collapsiblock_default_settings(), $theme_settings, array());
     drupal_add_js(array(
         'collapsiblock' => array(
-            'blocks' => variable_get('collapsiblock_settings', array()),
+            'blocks' => array_change_key_case(variable_get('collapsiblock_settings', array())),
             'default_state' => variable_get('collapsiblock_default_state', 1),
             'slide_type' => variable_get('collapsiblock_slide_type', 1),
             'slide_speed' => variable_get('collapsiblock_slide_speed', 200),