diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index edf78f0..40ecbf1 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -51,3 +51,13 @@ This project and everyone participating in it is governed by the [Open Archiver
 - Follow the existing code style.
 - Use TypeScript's strict mode.
 - Avoid using `any` as a type. Define clear interfaces and types in the `packages/types` directory.
+
+### Formatting
+
+We use Prettier for code formatting. Before you commit new code, it is necessary to check code format by running this command from the root folder:
+
+`pnpm run lint`
+
+If there are any format issues, you can use the following command to fix them
+
+`pnpm run format`
diff --git a/packages/backend/src/api/controllers/ingestion.controller.ts b/packages/backend/src/api/controllers/ingestion.controller.ts
index 746f1c8..c9d3ed2 100644
--- a/packages/backend/src/api/controllers/ingestion.controller.ts
+++ b/packages/backend/src/api/controllers/ingestion.controller.ts
@@ -33,13 +33,10 @@ export class IngestionController {
 		} catch (error: any) {
 			logger.error({ err: error }, 'Create ingestion source error');
 			// Return a 400 Bad Request for connection errors
-			return res
-				.status(400)
-				.json({
-					message:
-						error.message ||
-						'Failed to create ingestion source due to a connection error.',
-				});
+			return res.status(400).json({
+				message:
+					error.message || 'Failed to create ingestion source due to a connection error.',
+			});
 		}
 	};