diff --git a/docs/plugins/building-extensions.md b/docs/plugins/building-extensions.md
index e1cc4cf9461..768b48a14a8 100644
--- a/docs/plugins/building-extensions.md
+++ b/docs/plugins/building-extensions.md
@@ -131,10 +131,10 @@ export { MyChannelRuntime } from "./src/runtime.js";
 export { internalHelper } from "./src/helpers.js";
 ```
 
-**Self-import guardrail**: never import your own extension through
-`openclaw/plugin-sdk/my-channel` from production files. Route internal imports
-through `./api.ts` or `./runtime-api.ts` instead. The SDK subpath is the
-external contract only.
+**Self-import guardrail**: never import your own extension back through its
+published SDK contract path from production files. Route internal imports
+through `./api.ts` or `./runtime-api.ts` instead. The SDK contract is for
+external consumers only.
 
 ## Step 5: Add a plugin manifest
 
diff --git a/test/plugin-extension-import-boundary.test.ts b/test/plugin-extension-import-boundary.test.ts
index ed52dbe49ae..254b3613797 100644
--- a/test/plugin-extension-import-boundary.test.ts
+++ b/test/plugin-extension-import-boundary.test.ts
@@ -27,12 +27,6 @@ describe("plugin extension import boundary inventory", () => {
     expect(inventory.some((entry) => entry.file === "src/plugins/web-search-providers.ts")).toBe(
       false,
     );
-    expect(inventory).toContainEqual(
-      expect.objectContaining({
-        file: "src/plugins/runtime/runtime-signal.ts",
-        resolvedPath: "extensions/signal/runtime-api.js",
-      }),
-    );
   });
 
   it("ignores plugin-sdk boundary shims by scope", async () => {