diff --git a/resources/sql/autopatches/20161016.conpherence.imagephids.sql b/resources/sql/autopatches/20161016.conpherence.imagephids.sql
new file mode 100644
index 0000000000..98ba1ef5ce
--- /dev/null
+++ b/resources/sql/autopatches/20161016.conpherence.imagephids.sql
@@ -0,0 +1,2 @@
+ALTER TABLE {$NAMESPACE}_conpherence.conpherence_thread
+  DROP COLUMN imagePHIDs;
diff --git a/src/applications/conpherence/storage/ConpherenceThread.php b/src/applications/conpherence/storage/ConpherenceThread.php
index 6032835c42..e912f52591 100644
--- a/src/applications/conpherence/storage/ConpherenceThread.php
+++ b/src/applications/conpherence/storage/ConpherenceThread.php
@@ -10,7 +10,6 @@ final class ConpherenceThread extends ConpherenceDAO
 
   protected $title;
   protected $topic;
-  protected $imagePHIDs = array();  // TODO; nuke after migrations
   protected $profileImagePHID;
   protected $messageCount;
   protected $recentParticipantPHIDs = array();
@@ -42,7 +41,6 @@ final class ConpherenceThread extends ConpherenceDAO
       self::CONFIG_AUX_PHID => true,
       self::CONFIG_SERIALIZATION => array(
         'recentParticipantPHIDs' => self::SERIALIZATION_JSON,
-        'imagePHIDs' => self::SERIALIZATION_JSON,
       ),
       self::CONFIG_COLUMN_SCHEMA => array(
         'title' => 'text255?',