diff --git a/islandora_scholar.install b/islandora_scholar.install
index a74f2922..be58c107 100644
--- a/islandora_scholar.install
+++ b/islandora_scholar.install
@@ -21,10 +21,20 @@ function islandora_scholar_install() {
 function islandora_scholar_uninstall() {
   module_load_include('inc', 'islandora', 'includes/solution_packs');
   islandora_install_solution_pack('islandora_scholar', 'uninstall');
-  // @todo add rest of variables to delete at uninstall.
   $variables = array(
     'islandora_scholar_use_standard_metadata_display',
     'islandora_scholar_users_choose_display_csl',
+    'islandora_scholar_romeo_enable',
+    'islandora_scholar_thumbnail_width',
+    'islandora_scholar_thumbnail_height',
+    'islandora_scholar_path_to_pdftotext',
+    'islandora_scholar_preview_width',
+    'islandora_scholar_preview_height',
+    'islandora_scholar_issn_cache_time',
+    'islandora_scholar_romeo_key',
+    'islandora_scholar_romeo_url',
+    'islandora_scholar_romeo_cache_time',
+    'islandora_scholar_create_fulltext',
   );
   array_walk($variables, 'variable_del');
 }
diff --git a/modules/islandora_google_scholar/islandora_google_scholar.install b/modules/islandora_google_scholar/islandora_google_scholar.install
new file mode 100644
index 00000000..9433e83d
--- /dev/null
+++ b/modules/islandora_google_scholar/islandora_google_scholar.install
@@ -0,0 +1,18 @@
+<?php
+
+/**
+ * @file
+ * Install hooks for this module.
+ */
+
+/**
+ * Implements hook_install().
+ */
+function islandora_google_scholar_uninstall() {
+  $variables = array(
+    'islandora_scholar_google_scholar_search_enabled',
+    'islandora_scholar_google_scholar_primary_search_xpath',
+    'islandora_scholar_google_scholar_default_search_xpath',
+  )
+  array_walk($variables, 'variable_del');
+}
diff --git a/modules/islandora_scholar_embargo/islandora_scholar_embargo.install b/modules/islandora_scholar_embargo/islandora_scholar_embargo.install
new file mode 100644
index 00000000..90be0d26
--- /dev/null
+++ b/modules/islandora_scholar_embargo/islandora_scholar_embargo.install
@@ -0,0 +1,16 @@
+<?php
+
+/**
+ * @file
+ * Install hooks for this module.
+ */
+
+/**
+ * Implements hook_install().
+ */
+function islandora_scholar_embargo_uninstall() {
+  $variables = array(
+    'islandora_embargo_content_models',
+  )
+  array_walk($variables, 'variable_del');
+}