diff --git a/src/applications/diviner/query/DivinerAtomQuery.php b/src/applications/diviner/query/DivinerAtomQuery.php
--- a/src/applications/diviner/query/DivinerAtomQuery.php
+++ b/src/applications/diviner/query/DivinerAtomQuery.php
@@ -337,7 +337,7 @@
         $this->names);
     }
 
-    if ($this->titles) {
+    if ($this->titles && $this->titles[0]) {
       $hashes = array();
 
       foreach ($this->titles as $title) {