diff --git a/httprl.module b/httprl.module
index 7085d66..761666b 100644
--- a/httprl.module
+++ b/httprl.module
@@ -1204,7 +1204,7 @@ function httprl_send_request($results = NULL) {
         foreach ($write as $w) {
           $id = array_search($w, $this_run);
           // Make sure ID is in the streams & status is for writing.
-          if ($id === FALSE || empty($responses[$id]->status) || $responses[$id]->status != 'in progress') {
+          if ($id === FALSE || !isset($responses[$id]) || empty($responses[$id]->status) || $responses[$id]->status != 'in progress') {
             continue;
           }