diff --git a/packages/desktop/electron-builder.config.test.ts b/packages/desktop/electron-builder.config.test.ts
index 1156529fda..b7d1423406 100644
--- a/packages/desktop/electron-builder.config.test.ts
+++ b/packages/desktop/electron-builder.config.test.ts
@@ -1,4 +1,5 @@
 import { expect, test } from "bun:test"
+import path from "node:path"
 import type { Configuration } from "electron-builder"
 import type { GenericServerOptions } from "builder-util-runtime"
 import { GenericProvider } from "electron-updater/out/providers/GenericProvider"
@@ -183,6 +184,9 @@ test("ships and re-signs the codev-vmm helper on macOS", async () => {
   const helper = (resources as Exclude<typeof resources, string | undefined>)
     .filter((entry) => typeof entry !== "string")
     .find((entry) => entry.to === "codev-vmm")
-  expect(helper?.from).toEndWith("codev-sandbox/native/vzhelper/dist/codev-vmm")
+  // The config builds this with path.join, so the separators are the build
+  // host's. Joining the expectation too keeps the assertion about the location
+  // rather than about which platform is running the test.
+  expect(helper?.from).toEndWith(path.join("codev-sandbox", "native", "vzhelper", "dist", "codev-vmm"))
   expect(typeof config.afterSign).toBe("function")
 })