diff --git a/src/symbols/PhutilClassMapQuery.php b/src/symbols/PhutilClassMapQuery.php
--- a/src/symbols/PhutilClassMapQuery.php
+++ b/src/symbols/PhutilClassMapQuery.php
@@ -295,7 +295,9 @@
     $parts = array(
       $this->ancestorClass,
       $this->uniqueMethod,
+      $this->filterNull,
       $this->expandMethod,
+      $this->filterMethod,
       $this->sortMethod,
     );
     return implode(':', $parts);