diff --git a/includes/admin.form.inc b/includes/admin.form.inc
index a18dd05..1003ed8 100644
--- a/includes/admin.form.inc
+++ b/includes/admin.form.inc
@@ -97,7 +97,14 @@ function islandora_large_image_admin_submit($form, &$form_state) {
   $op = $form_state['clicked_button']['#id'];
   switch ($op) {
     case 'edit-reset':
-      variable_del('islandora_large_image_viewers');
+      $variables = array(
+        'islandora_large_image_viewers',
+        'islandora_use_kakadu',
+        'islandora_lossless',
+        'islandora_large_image_uncompress_tiff',
+        'islandora_kakadu_url',
+      );
+      array_walk($variables, 'variable_del');
       break;
   }
 }
diff --git a/islandora_large_image.install b/islandora_large_image.install
index 666808b..e3c1435 100644
--- a/islandora_large_image.install
+++ b/islandora_large_image.install
@@ -112,6 +112,12 @@ function islandora_large_image_install() {
 function islandora_large_image_uninstall() {
   module_load_include('inc', 'islandora', 'includes/solution_packs');
   islandora_install_solution_pack('islandora_large_image', 'uninstall');
-  $variables = array('islandora_large_image_viewers');
+  $variables = array(
+    'islandora_large_image_viewers',
+    'islandora_use_kakadu',
+    'islandora_lossless',
+    'islandora_large_image_uncompress_tiff',
+    'islandora_kakadu_url',
+  );
   array_walk($variables, 'variable_del');
 }