diff --git a/dev_tools/docs/nxdl_index.py b/dev_tools/docs/nxdl_index.py
index 310c9c20f..0ede704ac 100644
--- a/dev_tools/docs/nxdl_index.py
+++ b/dev_tools/docs/nxdl_index.py
@@ -164,7 +164,7 @@ def get_nxclass_description(nxdl_file: Path, namespaces) -> str:
 
   :ref:`Multi-dimensional Photoemission Spectroscopy <Mpes-Structure>`
 
-  :ref:`Atomprobe Microscopy <Apm-Structure>`
+  :ref:`Atom Probe Microscopy <Apm-Structure>`
 
   :ref:`Electron Microscopy <Em-Structure>`