diff --git a/database/upgrades/19-message-edit-ts.sqlite.sql b/database/upgrades/19-message-edit-ts.sqlite.sql
index 98c3a23..a25f317 100644
--- a/database/upgrades/19-message-edit-ts.sqlite.sql
+++ b/database/upgrades/19-message-edit-ts.sqlite.sql
@@ -39,7 +39,7 @@ CREATE TABLE reaction_new (
     CONSTRAINT reaction_message_fkey FOREIGN KEY (dc_msg_id, dc_first_attachment_id, dc_chan_id, dc_chan_receiver) REFERENCES message (dcid, dc_attachment_id, dc_chan_id, dc_chan_receiver) ON DELETE CASCADE
 );
 INSERT INTO reaction_new (dc_chan_id, dc_chan_receiver, dc_msg_id, dc_sender, dc_emoji_name, dc_thread_id, dc_first_attachment_id, mxid)
-    SELECT dc_chan_id, dc_chan_receiver, dc_msg_id, dc_sender, dc_emoji_name, dc_thread_id, dc_first_attachment_id, mxid FROM reaction;
+    SELECT dc_chan_id, dc_chan_receiver, dc_msg_id, dc_sender, dc_emoji_name, COALESCE(dc_thread_id, ''), dc_first_attachment_id, mxid FROM reaction;
 DROP TABLE reaction;
 ALTER TABLE reaction_new RENAME TO reaction;