diff --git a/src/agents/tools/image-tool.test.ts b/src/agents/tools/image-tool.test.ts
index 3c0f7389917..149b1aeb9d6 100644
--- a/src/agents/tools/image-tool.test.ts
+++ b/src/agents/tools/image-tool.test.ts
@@ -88,8 +88,10 @@ const ONE_PIXEL_JPEG_B64 = "QUJDRA==";
 
 async function withTempWorkspacePng(
   cb: (args: { workspaceDir: string; imagePath: string }) => Promise<void>,
+  options?: { parentDir?: string },
 ) {
-  const workspaceParent = await fs.mkdtemp(path.join(process.cwd(), ".openclaw-workspace-image-"));
+  const parentDir = options?.parentDir ?? os.tmpdir();
+  const workspaceParent = await fs.mkdtemp(path.join(parentDir, "openclaw-workspace-image-"));
   try {
     const workspaceDir = path.join(workspaceParent, "workspace");
     await fs.mkdir(workspaceDir, { recursive: true });
@@ -715,13 +717,13 @@ describe("image tool implicit imageModel config", () => {
     });
   });
 
-  it("allows workspace images via createOpenClawCodingTools default workspace root", async () => {
-    await withTempWorkspacePng(async ({ imagePath }) => {
+  it("allows workspace images via createOpenClawCodingTools when workspace root is explicit", async () => {
+    await withTempWorkspacePng(async ({ workspaceDir, imagePath }) => {
       const fetch = stubMinimaxOkFetch();
       await withTempAgentDir(async (agentDir) => {
         const cfg = createMinimaxImageConfig();
 
-        const tools = createOpenClawCodingTools({ config: cfg, agentDir });
+        const tools = createOpenClawCodingTools({ config: cfg, agentDir, workspaceDir });
         const tool = requireImageTool(tools.find((candidate) => candidate.name === "image"));
 
         await expectImageToolExecOk(tool, imagePath);