diff --git a/src/applications/diviner/controller/DivinerFindController.php b/src/applications/diviner/controller/DivinerFindController.php
--- a/src/applications/diviner/controller/DivinerFindController.php
+++ b/src/applications/diviner/controller/DivinerFindController.php
@@ -32,7 +32,7 @@
     }
 
     $context = $request->getStr('context');
-    if (strlen($context)) {
+    if (phutil_nonempty_string($context)) {
       $query->withContexts(array($context));
     }