diff --git a/test/gen-server/AuthCaching.ts b/test/gen-server/AuthCaching.ts
index 0f02f1f989..688291cbed 100644
--- a/test/gen-server/AuthCaching.ts
+++ b/test/gen-server/AuthCaching.ts
@@ -56,7 +56,6 @@ describe('AuthCaching', function() {
     await homeMS.run();
     homeServer = homeMS.flexServer;
     homeUrl = homeServer.getOwnUrl();
-    process.env.APP_HOME_URL = homeUrl;
     const docsMS = await MergedServer.create(0, ['docs'],
       {logToConsole: false, externalStorage: false});
     await docsMS.run();
@@ -80,7 +79,6 @@ describe('AuthCaching', function() {
 
   after(async function() {
     delete process.env.GRIST_DATA_DIR;
-    delete process.env.APP_HOME_URL;
     sandbox.restore();
     await testUtils.captureLog('warn', async () => {
       await docsServer.close();
diff --git a/test/nbrowser/testServer.ts b/test/nbrowser/testServer.ts
index bea76ab946..17043323fa 100644
--- a/test/nbrowser/testServer.ts
+++ b/test/nbrowser/testServer.ts
@@ -123,7 +123,6 @@ export class TestServerMerged extends EventEmitter implements IMochaServer {
       GRIST_SERVE_SAME_ORIGIN: 'true',
       // Run with HOME_PORT, STATIC_PORT, DOC_PORT, DOC_WORKER_COUNT in the environment to override.
       ...(useSinglePort ? {
-        APP_HOME_URL: this.getHost(),
         GRIST_SINGLE_PORT: 'true',
       } : (isCore ? {
         HOME_PORT: corePort,