diff --git includes/views/handlers/versioncontrol_handler_field_operation_attribution.inc includes/views/handlers/versioncontrol_handler_field_operation_attribution.inc
index ac8285d..e1aa3d4 100644
--- includes/views/handlers/versioncontrol_handler_field_operation_attribution.inc
+++ includes/views/handlers/versioncontrol_handler_field_operation_attribution.inc
@@ -38,7 +38,8 @@ class versioncontrol_handler_field_operation_attribution extends versioncontrol_
     // Render the author.
     $this->aliases['person_uid'] = $this->aliases['author_uid'];
     $this->field_alias = $this->aliases['author'];
-    $this->aliases['person_username'] = $this->usernames[$author_uid];
+    $this->aliases['person_username'] = 'author_username';
+    $values->{$this->aliases['person_username']} = $this->usernames[$author_uid];
     $author = parent::render($values);
 
     // Show only author if they are equal.
@@ -49,7 +50,8 @@ class versioncontrol_handler_field_operation_attribution extends versioncontrol_
     // Show both if they are different.
     $this->aliases['person_uid'] = $this->aliases['committer_uid'];
     $this->field_alias = $this->aliases['committer'];
-    $this->aliases['person_username'] = $this->usernames[$committer_uid];
+    $this->aliases['person_username'] = 'committer_username';
+    $values->{$this->aliases['person_username']} = $this->usernames[$committer_uid];
     $committer = parent::render($values);
     return t('<span class="authored-by">authored by !author</span>, <span class="committed-by">committed by !committer</span>', array(
       '!author' => $author, '!committer' => $committer));