diff --git a/x-pack/plugins/ingest_pipelines/server/routes/api/database/serialization.test.ts b/x-pack/plugins/ingest_pipelines/server/routes/api/database/serialization.test.ts
new file mode 100644
index 00000000000000..80598a1401bb10
--- /dev/null
+++ b/x-pack/plugins/ingest_pipelines/server/routes/api/database/serialization.test.ts
@@ -0,0 +1,23 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { serializeGeoipDatabase } from './serialization';
+
+describe('serializeGeoipDatabase', () => {
+  it('serializes maxmind database', () => {
+    const licenseKey = '123';
+    const createDbRequestBody = serializeGeoipDatabase({
+      databaseType: 'maxmind',
+      databaseName: 'GeoIP2-Anonymous-IP',
+      maxmind: licenseKey,
+    });
+
+    expect(createDbRequestBody.name).toBe('GeoIP2-Anonymous-IP.mmdb');
+    expect(createDbRequestBody.maxmind?.account_id).toBe(licenseKey);
+    expect(createDbRequestBody.ipinfo).toBeUndefined();
+  });
+});
diff --git a/x-pack/plugins/ingest_pipelines/server/routes/api/database/serialization.ts b/x-pack/plugins/ingest_pipelines/server/routes/api/database/serialization.ts
index 2f2c93ba5334d4..d6546d3c85248f 100644
--- a/x-pack/plugins/ingest_pipelines/server/routes/api/database/serialization.ts
+++ b/x-pack/plugins/ingest_pipelines/server/routes/api/database/serialization.ts
@@ -72,7 +72,7 @@ export const serializeGeoipDatabase = ({
   databaseName: string;
   maxmind?: string;
 }): SerializedGeoipDatabase => {
-  const database = { name: databaseName } as SerializedGeoipDatabase;
+  const database = { name: `${databaseName}.mmdb` } as SerializedGeoipDatabase;
 
   if (databaseType === 'maxmind') {
     database.maxmind = { account_id: maxmind ?? '' };