diff --git a/functions/src/config.ts b/functions/src/config.ts
index 00694479..680cfcde 100644
--- a/functions/src/config.ts
+++ b/functions/src/config.ts
@@ -1,16 +1,27 @@
-import { ServiceAccount, cert, initializeApp } from "firebase-admin/app";
+import {
+  cert,
+  getApps,
+  initializeApp,
+  ServiceAccount,
+} from "firebase-admin/app";
 import * as dotenv from "dotenv";
 
-// load environment variables
 dotenv.config({ path: "../.env" });
 const serviceAccount = JSON.parse(
   process.env.PUBLIC_FIREBASE_SERVICE_ACCOUNT || "{}",
 );
 
-// initialize firebase app
-export const initialize = () =>
-  initializeApp({
-    credential: cert(serviceAccount as ServiceAccount),
-  });
+const initializeFirebaseApp = () => {
+  if (getApps().length === 0) {
+    initializeApp({
+      credential: cert(serviceAccount as ServiceAccount),
+      databaseURL: process.env.FIREBASE_DATABASE_URL,
+    });
+  }
+};
 
-export const functionsRegion = process.env.PUBLIC_FIREBASE_FUNCTIONS_REGION || "";
+const projectId = serviceAccount.project_id;
+
+const functionsRegion = process.env.PUBLIC_FIREBASE_FUNCTIONS_REGION || "";
+
+export { initializeFirebaseApp, projectId, functionsRegion };
diff --git a/functions/src/index.ts b/functions/src/index.ts
index f7a526bd..a9d70c0b 100644
--- a/functions/src/index.ts
+++ b/functions/src/index.ts
@@ -1,8 +1,8 @@
 import * as httpApi from "./api/http/api";
 import * as authOnCreate from "./api/auth/on-create";
-import { initialize } from "./config";
+import { initializeFirebaseApp } from "./config";
 
-initialize();
+initializeFirebaseApp();
 
 exports.http_api = httpApi.default;
 exports.onCreateUser = authOnCreate.default;
diff --git a/functions/test/api/auth/on-create.test.ts b/functions/test/api/auth/on-create.test.ts
index 54771e50..8b7ecc44 100644
--- a/functions/test/api/auth/on-create.test.ts
+++ b/functions/test/api/auth/on-create.test.ts
@@ -2,7 +2,7 @@ import { expect } from "chai";
 import { getAuth } from "firebase-admin/auth";
 import { DocumentSnapshot, getFirestore } from "firebase-admin/firestore";
 import { before, describe, test } from "mocha";
-import {initialize} from "../../../src/config";
+import { initializeFirebaseApp } from "../../../src/config";
 
 describe("onCreate", () => {
   const collection = "users";
@@ -13,7 +13,7 @@ describe("onCreate", () => {
   };
 
   before(async () => {
-    initialize();
+    initializeFirebaseApp();
   });
 
   test("Create user and check if it saved in users collection", async () => {