diff --git a/packages/web/server/lib/opencode/server-utils-runtime.test.js b/packages/web/server/lib/opencode/server-utils-runtime.test.js
index 6e79e37c..452cc056 100644
--- a/packages/web/server/lib/opencode/server-utils-runtime.test.js
+++ b/packages/web/server/lib/opencode/server-utils-runtime.test.js
@@ -7,6 +7,11 @@ import { createServerUtilsRuntime } from './server-utils-runtime.js';
 const originalPath = process.env.PATH;
 
 afterEach(() => {
+  if (originalPath === undefined) {
+    delete process.env.PATH;
+    return;
+  }
+
   process.env.PATH = originalPath;
 });