diff --git a/src/applications/macro/query/PhabricatorMacroSearchEngine.php b/src/applications/macro/query/PhabricatorMacroSearchEngine.php
index 989dbe5fb6..d30c0383b0 100644
--- a/src/applications/macro/query/PhabricatorMacroSearchEngine.php
+++ b/src/applications/macro/query/PhabricatorMacroSearchEngine.php
@@ -14,7 +14,7 @@ final class PhabricatorMacroSearchEngine
     $saved->setParameter('nameLike', $request->getStr('nameLike'));
     $saved->setParameter('createdStart', $request->getStr('createdStart'));
     $saved->setParameter('createdEnd', $request->getStr('createdEnd'));
-    $saved->setParameter('flagColor', $request->getStr('flagColor'));
+    $saved->setParameter('flagColor', $request->getStr('flagColor', '-1'));
 
     return $saved;
   }