diff --git a/strongarm.module b/strongarm.module
index 8b69697..c8b1e2a 100644
--- a/strongarm.module
+++ b/strongarm.module
@@ -193,16 +193,21 @@ function variable_features_export_render($module, $data) {
  */
 function strongarm_features_pipe_node_alter(&$pipe, $data, $export) {
   if (!empty($data)) {
-    $variables = array(
-      'comment',
-      'comment_anonymous',
-      'comment_controls',
-      'comment_default_mode',
-      'comment_default_order',
-      'comment_default_per_page',
-      'comment_form_location',
-      'comment_preview',
-      'comment_subject_field',
+    $variables = array();
+    if (module_exists('comment')) {
+      $variables = array(
+        'comment',
+        'comment_anonymous',
+        'comment_controls',
+        'comment_default_mode',
+        'comment_default_order',
+        'comment_default_per_page',
+        'comment_form_location',
+        'comment_preview',
+        'comment_subject_field',
+      );
+    }
+    $variables = array_merge($variables, array(
       'field_bundle_settings_node_',
       'language_content_type',
       'menu_options',
@@ -210,7 +215,7 @@ function strongarm_features_pipe_node_alter(&$pipe, $data, $export) {
       'node_options',
       'node_preview',
       'node_submitted',
-    );
+    ));
     foreach ($data as $node_type) {
       foreach ($variables as $variable_name) {
         $pipe['variable'][] = "{$variable_name}_{$node_type}";