diff --git a/docs/source/_templates/api_index_head.rst b/docs/source/_templates/api_index_head.rst
index 0c1e6b7e..325f9f0a 100644
--- a/docs/source/_templates/api_index_head.rst
+++ b/docs/source/_templates/api_index_head.rst
@@ -3,7 +3,7 @@
 
 .. _target-api:
 
-API Reference
+API reference
 =============
 
 Information on specific functions, classes, and methods.
diff --git a/docs/source/index.md b/docs/source/index.md
index 5dfad35e..94990d9b 100644
--- a/docs/source/index.md
+++ b/docs/source/index.md
@@ -6,7 +6,7 @@ A Python toolbox for analysing body movements across space and time, to aid the
 ::::{grid} 1 2 2 3
 :gutter: 3
 
-:::{grid-item-card} {fas}`book;sd-text-primary` User Guide
+:::{grid-item-card} {fas}`book;sd-text-primary` User guide
 :link: user_guide/index
 :link-type: doc
 
diff --git a/docs/source/user_guide/index.md b/docs/source/user_guide/index.md
index f3222a5a..e8caa8cf 100644
--- a/docs/source/user_guide/index.md
+++ b/docs/source/user_guide/index.md
@@ -1,4 +1,4 @@
-# User Guide
+# User guide
 
 Start by [installing the package](installation.md) and
 [loading your own tracking data](input_output.md), or playing with some