diff --git a/src/applications/pholio/xaction/PholioImageNameTransaction.php b/src/applications/pholio/xaction/PholioImageNameTransaction.php
index 33b01903ee..f4705a98fc 100644
--- a/src/applications/pholio/xaction/PholioImageNameTransaction.php
+++ b/src/applications/pholio/xaction/PholioImageNameTransaction.php
@@ -1,85 +1,85 @@
 <?php
 
 final class PholioImageNameTransaction
   extends PholioImageTransactionType {
 
   const TRANSACTIONTYPE = 'image-name';
 
   public function generateOldValue($object) {
     $name = null;
     $phid = null;
     $image = $this->getImageForXaction($object);
     if ($image) {
       $name = $image->getName();
       $phid = $image->getPHID();
     }
     return array($phid => $name);
   }
 
   public function applyInternalEffects($object, $value) {
     $image = $this->getImageForXaction($object);
     $value = (string)head($this->getNewValue());
     $image->setName($value);
     $image->save();
   }
 
   public function getTitle() {
     $old = $this->getOldValue();
     $new = $this->getNewValue();
 
     return pht(
       '%s renamed an image (%s) from %s to %s.',
       $this->renderAuthor(),
       $this->renderHandle(key($new)),
-      $this->renderValue($old),
-      $this->renderValue($new));
+      $this->renderValue((string)head($old)),
+      $this->renderValue((string)head($new)));
   }
 
   public function getTitleForFeed() {
     return pht(
       '%s updated the image names of %s.',
       $this->renderAuthor(),
       $this->renderObject());
   }
 
   public function mergeTransactions(
     $object,
     PhabricatorApplicationTransaction $u,
     PhabricatorApplicationTransaction $v) {
 
     $raw_new_value_u = $u->getNewValue();
     $raw_new_value_v = $v->getNewValue();
     $phid_u = head_key($raw_new_value_u);
     $phid_v = head_key($raw_new_value_v);
     if ($phid_u == $phid_v) {
       return $v;
     }
 
     return null;
   }
 
   public function shouldHide() {
     $old = $this->getOldValue();
     return ($old === array(null => null));
   }
 
   public function validateTransactions($object, array $xactions) {
     $errors = array();
 
     $max_length = $object->getColumnMaximumByteLength('name');
     foreach ($xactions as $xaction) {
       $new_value = head(array_values($xaction->getNewValue()));
       $new_length = strlen($new_value);
       if ($new_length > $max_length) {
         $errors[] = $this->newInvalidError(
           pht(
             'Mock image names must not be longer than %s character(s).',
             new PhutilNumber($max_length)));
       }
     }
 
     return $errors;
   }
 
 
 }