diff --git a/docs/manual/markdown/docs/btstack.css b/docs/manual/markdown/docs/btstack.css
new file mode 100644
index 000000000..0a0051e9d
--- /dev/null
+++ b/docs/manual/markdown/docs/btstack.css
@@ -0,0 +1 @@
+a.toctree-l4 { display: none; }
\ No newline at end of file