diff --git a/packages/hiccup-css/package.json b/packages/hiccup-css/package.json
index 062ee143fb..5b785bf633 100644
--- a/packages/hiccup-css/package.json
+++ b/packages/hiccup-css/package.json
@@ -87,9 +87,6 @@
         "./css": {
             "import": "./css.js"
         },
-        "./impl": {
-            "import": "./impl.js"
-        },
         "./import": {
             "import": "./import.js"
         },
diff --git a/packages/hiccup-css/src/impl.ts b/packages/hiccup-css/src/impl.ts
index a2d4ff27cf..b56768f06a 100644
--- a/packages/hiccup-css/src/impl.ts
+++ b/packages/hiccup-css/src/impl.ts
@@ -1,3 +1,4 @@
+// thing:no-export
 import type { FnAny } from "@thi.ng/api";
 import { isArray } from "@thi.ng/checks/is-array";
 import { isFunction } from "@thi.ng/checks/is-function";