diff --git a/doc/ommx_ecosystem/adapter.ipynb b/doc/ommx_ecosystem/adapter.ipynb
index a2cb073a..17f14884 100644
--- a/doc/ommx_ecosystem/adapter.ipynb
+++ b/doc/ommx_ecosystem/adapter.ipynb
@@ -122,6 +122,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "import ommx.v1\n",
+    "\n",
     "def xxx_to_instance(data: Any) -> ommmx.v1.Instance:\n",
     "\t\t..."
    ]