diff --git a/prepopulate.module b/prepopulate.module
index d4caa8e..d2f1306 100644
--- a/prepopulate.module
+++ b/prepopulate.module
@@ -77,7 +77,7 @@ function _prepopulate_request_walk(&$form, &$request_slice) {
         $or_checks = array(
             'no #type set' => !isset($form[$request_variable]['#type']),
             'language container' => isset($form[$request_variable]['#language']) && isset($form[$request_variable][$form[$request_variable]['#language']]['#type']) && !in_array($form[$request_variable][$form[$request_variable]['#language']]['#type'], $limited_types),
-            'container' => isset($form[$request_variable]['#type']) && $form[$request_variable]['#type'] == 'container' && isset($form[$request_variable]['#language']) && $form[$request_variable][$form[$request_variable]['#language']][0]['#type'] == 'text_format',
+            'container' => isset($form[$request_variable]['#type']) && $form[$request_variable]['#type'] == 'container' && isset($form[$request_variable]['#language']) && isset($form[$request_variable][$form[$request_variable]['#language']][0]['#type']) && $form[$request_variable][$form[$request_variable]['#language']][0]['#type'] == 'text_format',
             'allowed #type' => isset($form[$request_variable]['#type']) && !in_array($form[$request_variable]['#type'], $limited_types),
         );
         _prepopulate_log($or_checks, 'is valid for drill down: ' . $request_variable);
@@ -122,4 +122,4 @@ function _prepopulate_log($item, $reason) {
   if ($user->uid == 1 && function_exists('dsm')) {
     dsm($item, $reason);
   }
-}
\ No newline at end of file
+}