diff --git a/src/applications/differential/field/specification/reviewers/DifferentialReviewersFieldSpecification.php b/src/applications/differential/field/specification/reviewers/DifferentialReviewersFieldSpecification.php
index 1d6546cd05..1117ade5cc 100644
--- a/src/applications/differential/field/specification/reviewers/DifferentialReviewersFieldSpecification.php
+++ b/src/applications/differential/field/specification/reviewers/DifferentialReviewersFieldSpecification.php
@@ -140,7 +140,7 @@ final class DifferentialReviewersFieldSpecification
   }
 
   public function renderValueForRevisionList(DifferentialRevision $revision) {
-    $primary_reviewer = $this->getPrimaryReviewer($revision);
+    $primary_reviewer = $revision->getPrimaryReviewer();
     if ($primary_reviewer) {
       $other_reviewers = array_flip($revision->getReviewers());
       unset($other_reviewers[$primary_reviewer]);
@@ -157,19 +157,11 @@ final class DifferentialReviewersFieldSpecification
 
   public function getRequiredHandlePHIDsForRevisionList(
     DifferentialRevision $revision) {
-    $primary_reviewer = $this->getPrimaryReviewer($revision);
+    $primary_reviewer = $revision->getPrimaryReviewer();
     if ($primary_reviewer) {
       return array($primary_reviewer);
     }
     return array();
   }
 
-  private function getPrimaryReviewer(DifferentialRevision $revision) {
-    $primary_reviewer = $revision->getLastReviewerPHID();
-    if (!$primary_reviewer) {
-      $primary_reviewer = head($revision->getReviewers());
-    }
-    return $primary_reviewer;
-  }
-
 }
diff --git a/src/applications/differential/storage/revision/DifferentialRevision.php b/src/applications/differential/storage/revision/DifferentialRevision.php
index 5e5303a30a..218470b656 100644
--- a/src/applications/differential/storage/revision/DifferentialRevision.php
+++ b/src/applications/differential/storage/revision/DifferentialRevision.php
@@ -206,6 +206,13 @@ final class DifferentialRevision extends DifferentialDAO {
     return array_keys($this->getUnsubscribed());
   }
 
+  public function getPrimaryReviewer() {
+    if (!$this->lastReviewerPHID) {
+      return head($this->getReviewers());
+    }
+    return $this->lastReviewerPHID;
+  }
+
   public function loadReviewedBy() {
     $reviewer = null;