diff --git a/services/cubejs/src/utils/__tests__/prepareDbParams.test.js b/services/cubejs/src/utils/__tests__/prepareDbParams.test.js
deleted file mode 100644
index 1a953a76..00000000
--- a/services/cubejs/src/utils/__tests__/prepareDbParams.test.js
+++ /dev/null
@@ -1,19 +0,0 @@
-import assert from "node:assert/strict";
-import { createRequire } from "node:module";
-import { describe, it } from "node:test";
-
-import prepareDbParams from "../prepareDbParams.js";
-
-const require = createRequire(import.meta.url);
-
-describe("prepareDbParams", () => {
-  it("makes BigQuery drivers read-only, so rollups never write to the customer's project", () => {
-    const { BigQueryDriver } = require("@cubejs-backend/bigquery-driver");
-    const params = prepareDbParams(
-      { projectId: "abler-web", keyFile: JSON.stringify({ client_email: "sa@abler-web.iam" }) },
-      "bigquery",
-    );
-
-    assert.equal(new BigQueryDriver(params).readOnly(), true);
-  });
-});
diff --git a/services/cubejs/src/utils/prepareDbParams.js b/services/cubejs/src/utils/prepareDbParams.js
index 49b428e6..d6e20d0a 100644
--- a/services/cubejs/src/utils/prepareDbParams.js
+++ b/services/cubejs/src/utils/prepareDbParams.js
@@ -58,8 +58,6 @@ const prepareDbParams = (dbParams, dbType) => {
       dbConfig = {
         ...dbConfig,
         credentials: { ...keyFile },
-        // rollups load straight into Cube Store; no staging tables in the customer's project
-        readOnly: true,
       };
       break;
     case "mssql":