diff --git a/logintoboggan.install b/logintoboggan.install
index 520f5670ef6a9f09ed37e98296fe3ba5f866f5f6..15d79f6bebee52318a6e071ae823bc20b0262f6a 100644
--- a/logintoboggan.install
+++ b/logintoboggan.install
@@ -94,4 +94,20 @@ function logintoboggan_update_5() {
 
   drupal_set_message(t('logintoboggan cleaning of user/profile data successful'));
   return array();
+}
+
+/**
+ * Implementation of hook_uninstall().
+ */
+function logintoboggan_uninstall() {
+  variable_del('toboggan_block_type');
+  variable_del('toboggan_display_logged_in');
+  variable_del('toboggan_block_msg');
+  variable_del('login_with_mail');
+  variable_del('email_reg_confirm');
+  variable_del('reg_passwd_set');
+  variable_del('toboggan_role');
+  variable_del('toboggan_redirect_on_register');
+  variable_del('toboggan_redirect_on_confirm');
+  variable_del('login_successful');
 }
\ No newline at end of file