diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index 250e741a55..f403a4ed7e 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -316,6 +316,7 @@ phutil_register_library_map(array(
     'ConpherenceTestCase' => 'applications/conpherence/__tests__/ConpherenceTestCase.php',
     'ConpherenceThread' => 'applications/conpherence/storage/ConpherenceThread.php',
     'ConpherenceThreadDatasource' => 'applications/conpherence/typeahead/ConpherenceThreadDatasource.php',
+    'ConpherenceThreadDateMarkerTransaction' => 'applications/conpherence/xaction/ConpherenceThreadDateMarkerTransaction.php',
     'ConpherenceThreadIndexEngineExtension' => 'applications/conpherence/engineextension/ConpherenceThreadIndexEngineExtension.php',
     'ConpherenceThreadListView' => 'applications/conpherence/view/ConpherenceThreadListView.php',
     'ConpherenceThreadMailReceiver' => 'applications/conpherence/mail/ConpherenceThreadMailReceiver.php',
@@ -5107,6 +5108,7 @@ phutil_register_library_map(array(
       'PhabricatorNgramsInterface',
     ),
     'ConpherenceThreadDatasource' => 'PhabricatorTypeaheadDatasource',
+    'ConpherenceThreadDateMarkerTransaction' => 'ConpherenceThreadTransactionType',
     'ConpherenceThreadIndexEngineExtension' => 'PhabricatorIndexEngineExtension',
     'ConpherenceThreadListView' => 'AphrontView',
     'ConpherenceThreadMailReceiver' => 'PhabricatorObjectMailReceiver',
diff --git a/src/applications/conpherence/ConpherenceTransactionRenderer.php b/src/applications/conpherence/ConpherenceTransactionRenderer.php
index 187247e063..5a6eaffaf2 100644
--- a/src/applications/conpherence/ConpherenceTransactionRenderer.php
+++ b/src/applications/conpherence/ConpherenceTransactionRenderer.php
@@ -60,7 +60,8 @@ final class ConpherenceTransactionRenderer extends Phobject {
     // between days. some setup required!
     $previous_transaction = null;
     $date_marker_transaction = id(new ConpherenceTransaction())
-      ->setTransactionType(ConpherenceTransaction::TYPE_DATE_MARKER)
+      ->setTransactionType(
+        ConpherenceThreadDateMarkerTransaction::TRANSACTIONTYPE)
       ->makeEphemeral();
     $date_marker_transaction_view = id(new ConpherenceTransactionView())
       ->setUser($user)
diff --git a/src/applications/conpherence/storage/ConpherenceTransaction.php b/src/applications/conpherence/storage/ConpherenceTransaction.php
index c692dffb98..2fb3fca380 100644
--- a/src/applications/conpherence/storage/ConpherenceTransaction.php
+++ b/src/applications/conpherence/storage/ConpherenceTransaction.php
@@ -4,7 +4,6 @@ final class ConpherenceTransaction
   extends PhabricatorModularTransaction {
 
   const TYPE_PARTICIPANTS    = 'participants';
-  const TYPE_DATE_MARKER     = 'date-marker';
 
   public function getApplicationName() {
     return 'conpherence';
@@ -39,8 +38,6 @@ final class ConpherenceTransaction
     switch ($this->getTransactionType()) {
       case self::TYPE_PARTICIPANTS:
         return ($old === null);
-      case self::TYPE_DATE_MARKER:
-        return false;
     }
 
     return parent::shouldHide();
@@ -93,8 +90,6 @@ final class ConpherenceTransaction
 
     $phids[] = $this->getAuthorPHID();
     switch ($this->getTransactionType()) {
-      case self::TYPE_DATE_MARKER:
-        break;
       case self::TYPE_PARTICIPANTS:
         $phids = array_merge($phids, $this->getOldValue());
         $phids = array_merge($phids, $this->getNewValue());
diff --git a/src/applications/conpherence/view/ConpherenceTransactionView.php b/src/applications/conpherence/view/ConpherenceTransactionView.php
index 28dcf5c361..d976fb604f 100644
--- a/src/applications/conpherence/view/ConpherenceTransactionView.php
+++ b/src/applications/conpherence/view/ConpherenceTransactionView.php
@@ -67,7 +67,7 @@ final class ConpherenceTransactionView extends AphrontView {
 
     $transaction = $this->getConpherenceTransaction();
     switch ($transaction->getTransactionType()) {
-      case ConpherenceTransaction::TYPE_DATE_MARKER:
+      case ConpherenceThreadDateMarkerTransaction::TRANSACTIONTYPE:
         return javelin_tag(
           'div',
           array(
diff --git a/src/applications/conpherence/xaction/ConpherenceThreadDateMarkerTransaction.php b/src/applications/conpherence/xaction/ConpherenceThreadDateMarkerTransaction.php
new file mode 100644
index 0000000000..3a7819ba4e
--- /dev/null
+++ b/src/applications/conpherence/xaction/ConpherenceThreadDateMarkerTransaction.php
@@ -0,0 +1,8 @@
+<?php
+
+final class ConpherenceThreadDateMarkerTransaction
+  extends ConpherenceThreadTransactionType {
+
+  const TRANSACTIONTYPE = 'date-marker';
+
+}