--- a/themer.module	2011-11-30 20:44:30.000000000 +0200
+++ b/themer.module	2011-11-30 20:42:19.000000000 +0200
@@ -264,7 +264,7 @@
  * Random class.
  */
 function themer_class_random() {
-  return 'random-' . rand(1, variable_get('theme_body_class_random_max', 2));
+  return 'random-' . rand(1, variable_get('themer_body_class_random_max', 2));
 }
 
 /**