diff --git a/views/activity_log_stream_owner_type_argument_default.inc b/views/activity_log_stream_owner_type_argument_default.inc
index 36cd799..bbc984f 100755
--- a/views/activity_log_stream_owner_type_argument_default.inc
+++ b/views/activity_log_stream_owner_type_argument_default.inc
@@ -1,5 +1,5 @@
 <?php
-
+  
 /**
  * @file
  *   Adds an option to set the default argument from known stream owner types.
@@ -16,7 +16,7 @@ class activity_log_stream_owner_type_argument_default extends views_plugin_argum
       '#type' => 'select',
       '#title' => t('Stream type'),
       '#description' => t('The type of entity on whose stream the activity is intended to appear.'),
-      '#default_value' => isset($argument[$option_name]) ? $argument[$option_name] : 'user',
+      '#default_value' => isset($argument[$this->option_name]) ? $argument[$this->option_name] : 'user',
       '#options' => activity_log_get_rules_data_types(),
       '#required' => TRUE,
       '#process' => array('views_process_dependency'),