diff --git a/src/applications/macro/controller/PhabricatorMacroMemeController.php b/src/applications/macro/controller/PhabricatorMacroMemeController.php
index 91e02fe84..520737ce4 100644
--- a/src/applications/macro/controller/PhabricatorMacroMemeController.php
+++ b/src/applications/macro/controller/PhabricatorMacroMemeController.php
@@ -1,62 +1,64 @@
 <?php
 
 final class PhabricatorMacroMemeController
   extends PhabricatorMacroController {
 
   public function processRequest() {
     $request = $this->getRequest();
     $macro_name = $request->getStr('macro');
     $upper_text = $request->getStr('uppertext');
     $lower_text = $request->getStr('lowertext');
     $user = $request->getUser();
 
     $uri = PhabricatorMacroMemeController::generateMacro($user, $macro_name,
       $upper_text, $lower_text);
     if ($uri === false) {
       return new Aphront404Response();
     }
-    return id(new AphrontRedirectResponse())->setURI($uri);
+    return id(new AphrontRedirectResponse())
+      ->setIsExternal(true)
+      ->setURI($uri);
   }
 
   public static function generateMacro($user, $macro_name, $upper_text,
       $lower_text) {
     $macro = id(new PhabricatorMacroQuery())
       ->setViewer($user)
       ->withNames(array($macro_name))
       ->executeOne();
     if (!$macro) {
       return false;
     }
     $file = $macro->getFile();
 
     $upper_text = strtoupper($upper_text);
     $lower_text = strtoupper($lower_text);
     $mixed_text = md5($upper_text).':'.md5($lower_text);
     $hash = 'meme'.hash('sha256', $mixed_text);
     $xform = id(new PhabricatorTransformedFile())
       ->loadOneWhere('originalphid=%s and transform=%s',
         $file->getPHID(), $hash);
 
     if ($xform) {
       $memefile = id(new PhabricatorFileQuery())
         ->setViewer($user)
         ->withPHIDs(array($xform->getTransformedPHID()))
         ->executeOne();
       if ($memefile) {
         return $memefile->getBestURI();
       }
     }
 
     $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
     $transformers = (new PhabricatorImageTransformer());
     $newfile = $transformers
       ->executeMemeTransform($file, $upper_text, $lower_text);
     $xfile = new PhabricatorTransformedFile();
     $xfile->setOriginalPHID($file->getPHID());
     $xfile->setTransformedPHID($newfile->getPHID());
     $xfile->setTransform($hash);
     $xfile->save();
 
     return $newfile->getBestURI();
   }
 }