diff --git a/lib/www/server/lib/db/plan/patch.js b/lib/www/server/lib/db/plan/patch.js
index d9d9e0d..0146a6f 100644
--- a/lib/www/server/lib/db/plan/patch.js
+++ b/lib/www/server/lib/db/plan/patch.js
@@ -4,6 +4,7 @@ async function patch (projectId, sequence, payload, opts = {}) {
 	const client = await setSurvey(projectId);
 
 	try {
+		transaction.begin(client);
 
 		const text = `
 			UPDATE planned_lines
@@ -23,8 +24,10 @@ async function patch (projectId, sequence, payload, opts = {}) {
 		const values = [ sequence, p.sequence, p.fsp, p.lsp, p.ts0, p.ts1, p.name, p.remarks, p.meta ];
 
 		await client.query(text, values);
+
+		transaction.commit(client);
 	} catch (err) {
-		transaction.rollback(err);
+		transaction.rollback(client);
 		throw err;
 	} finally {
 		client.release();