diff --git a/packages/nodes-base/credentials/LineNotifyOAuth2Api.credentials.ts b/packages/nodes-base/credentials/LineNotifyOAuth2Api.credentials.ts
index f97af2e872..b5bc61fb8f 100644
--- a/packages/nodes-base/credentials/LineNotifyOAuth2Api.credentials.ts
+++ b/packages/nodes-base/credentials/LineNotifyOAuth2Api.credentials.ts
@@ -9,6 +9,7 @@ export class LineNotifyOAuth2Api implements ICredentialType {
 		'oAuth2Api',
 	];
 	displayName = 'Line Notify OAuth2 API';
+	documentationUrl = 'line';
 	properties = [
 		{
 			displayName: 'Authorization URL',