diff --git a/base/PerfOptions.php b/base/PerfOptions.php
index 23ed71c..dfca5e5 100644
--- a/base/PerfOptions.php
+++ b/base/PerfOptions.php
@@ -274,7 +274,7 @@ public function __construct(Vector<string> $argv) {
     $this->forceInnodb = $isFacebook || $this->getBool('force-innodb');
 
     if ($isFacebook && $this->php5 === null && $this->hhvm === null) {
-      $this->hhvm = $fbcode.'/_bin/hphp/hhvm/hhvm';
+      $this->hhvm = $fbcode.'/buck-out/gen/hphp/hhvm/hhvm/hhvm';
     }
 
     $this->traceSubProcess = $this->getBool('trace');