diff --git a/og_access/og_access.module b/og_access/og_access.module
index d250233..bdeccdd 100644
--- a/og_access/og_access.module
+++ b/og_access/og_access.module
@@ -240,14 +240,14 @@ function _og_access_verify_access_field_existence($node) {
     $target_type = $field_info['settings']['target_type'];
 
     foreach (array_keys($groups_bundles[$target_type]) as $bundle) {
-      $instances = field_info_instances('node', $bundle);
+      $instances = field_info_instances($target_type, $bundle);
       // Verify that the OG access field is attached to the group bundles.
       if (empty($instances[OG_ACCESS_FIELD])) {
         $params = array(
           '@nid' => $node->nid,
           '@bundle' => $bundle,
         );
-        throw new OgException(format_string('Cannot set visibility of node ID @nid as the group node of type "@bundle" does not have the "Group visibility" field attached to it.', $params));
+        throw new OgException(format_string('Cannot set visibility of node ID @nid as the group of type "@bundle" does not have the "Group visibility" field attached to it.', $params));
       }
     }
   }