diff --git a/views_bulk_operations.install b/views_bulk_operations.install
index bb4e068..da3e707 100644
--- a/views_bulk_operations.install
+++ b/views_bulk_operations.install
@@ -82,34 +82,35 @@ function views_bulk_operations_update_6001() {
     foreach (array_keys($view->display) as $display) {
       $display_options = &$view->display[$display]->display_options;
       if (isset($display_options['style_plugin']) && $display_options['style_plugin'] == 'bulk') {
-        $changed = TRUE;
+        if (!empty($display_options['style_options']['selected_operations'])) {
+          $changed = TRUE;
+          foreach (array_filter($display_options['style_options']['selected_operations']) as $key) {
+            // Adjust operation key.
+            $new_key = str_replace(':', '-', $key);
 
-        if (!empty($display_options['style_options']['selected_operations'])) foreach (array_filter($display_options['style_options']['selected_operations']) as $key) {
-          // Adjust operation key.
-          $new_key = str_replace(':', '-', $key);
+            // Move selected operations.
+            $display_options['style_options']['operations'][$new_key]['selected'] = TRUE;
 
-          // Move selected operations.
-          $display_options['style_options']['operations'][$new_key]['selected'] = TRUE;
+            // Move operation labels.
+            if (isset($display_options['style_options']['labels'][$key])) {
+              $display_options['style_options']['operations'][$new_key]['label'] = $display_options['style_options']['labels'][$key];
+            }
 
-          // Move operation labels.
-          if (isset($display_options['style_options']['labels'][$key])) {
-            $display_options['style_options']['operations'][$new_key]['label'] = $display_options['style_options']['labels'][$key];
-          }
+            // Move operations settings.
+            if (isset($display_options['style_options'][$key])) {
+              $display_options['style_options']['operations'][$new_key]['settings'] = $display_options['style_options'][$key];
+              unset($display_options['style_options'][$key]);
+            }
 
-          // Move operations settings.
-          if (isset($display_options['style_options'][$key])) {
-            $display_options['style_options']['operations'][$new_key]['settings'] = $display_options['style_options'][$key];
-            unset($display_options['style_options'][$key]);
+            // Move skip confirmation.
+            $display_options['style_options']['operations'][$new_key]['skip_confirmation'] = $display_options['style_options']['skip_confirmation'];
           }
 
-          // Move skip confirmation.
-          $display_options['style_options']['operations'][$new_key]['skip_confirmation'] = $display_options['style_options']['skip_confirmation'];
+          // Unset old values.
+          unset($display_options['style_options']['selected_operations']);
+          unset($display_options['style_options']['labels']);
+          unset($display_options['style_options']['skip_confirmation']);
         }
-
-        // Unset old values.
-        unset($display_options['style_options']['selected_operations']);
-        unset($display_options['style_options']['labels']);
-        unset($display_options['style_options']['skip_confirmation']);
       }
     }
     if ($changed) {