diff --git a/docs/user-guide/examples/algorithms/README.txt b/docs/user-guide/examples/algorithms/README.txt
index 4ddc214f0d3..c798294f73d 100644
--- a/docs/user-guide/examples/algorithms/README.txt
+++ b/docs/user-guide/examples/algorithms/README.txt
@@ -1,4 +1,4 @@
 Algorithms
-==========
+----------
 
 .. _algorithms-examples-gallery:
diff --git a/docs/user-guide/examples/core/README.txt b/docs/user-guide/examples/core/README.txt
index 5bcae85324a..8042b0dec57 100644
--- a/docs/user-guide/examples/core/README.txt
+++ b/docs/user-guide/examples/core/README.txt
@@ -1,4 +1,4 @@
 Core Functionality
-==================
+------------------
 
 .. _core-examples-gallery:
diff --git a/docs/user-guide/examples/tutorials/README.txt b/docs/user-guide/examples/tutorials/README.txt
index e8b6be88e86..c1c31978d8e 100644
--- a/docs/user-guide/examples/tutorials/README.txt
+++ b/docs/user-guide/examples/tutorials/README.txt
@@ -1,6 +1,6 @@
 .. _tutorials:
 
 Tutorials
-=================
+---------
 
 This gallery contains different tutorials of different use cases for ctapipe.
diff --git a/docs/user-guide/examples/visualization/README.txt b/docs/user-guide/examples/visualization/README.txt
index e4cc3341b62..c070a546918 100644
--- a/docs/user-guide/examples/visualization/README.txt
+++ b/docs/user-guide/examples/visualization/README.txt
@@ -1,4 +1,4 @@
 Visualization
-=============
+-------------
 
 .. _visualization-examples-gallery: