diff --git a/doc/assets/param_help.png b/doc/_static/param_help.png
similarity index 100%
rename from doc/assets/param_help.png
rename to doc/_static/param_help.png
diff --git a/doc/assets/logo_stacked.png b/doc/assets/logo_stacked.png
deleted file mode 100644
index 05a9425fb..000000000
Binary files a/doc/assets/logo_stacked.png and /dev/null differ
diff --git a/doc/user_guide/Parameters.ipynb b/doc/user_guide/Parameters.ipynb
index 13592f295..4c91265a1 100644
--- a/doc/user_guide/Parameters.ipynb
+++ b/doc/user_guide/Parameters.ipynb
@@ -462,7 +462,7 @@
    "id": "54ecbc24-14eb-4c07-8a00-0fb79b6241da",
    "metadata": {},
    "source": [
-    "<img src=\"../assets/param_help.png\" alt=\"Param help\"></img>"
+    "<img src=\"../_static/param_help.png\" alt=\"Param help\"></img>"
    ]
   },
   {