diff --git a/mollom.install b/mollom.install
index e3875af..2e601bc 100644
--- a/mollom.install
+++ b/mollom.install
@@ -184,8 +184,8 @@ function mollom_schema() {
       ),
     ),
     'indexes' => array(
-      'contentId' => array('contentId'),
-      'captchaId' => array('captchaId'),
+      'contentId' => array('contentid'),
+      'captchaId' => array('captchaid'),
     ),
     'primary key' => array('entity', 'id'),
     'foreign keys' => array(