diff --git a/username_policy.install b/username_policy.install
index 7fddfb3..b29f267 100644
--- a/username_policy.install
+++ b/username_policy.install
@@ -9,5 +9,6 @@
  * Implements hook_uninstall().
  */
 function username_policy_uninstall() {
-  variable_del('username_policy_pattern');
+  variable_del('username_policy');
 }
+