diff --git a/ros2/example_10.md b/ros2/example_10.md
index 8728584..92659ee 100644
--- a/ros2/example_10.md
+++ b/ros2/example_10.md
@@ -1,4 +1,4 @@
-# Example 10
+## Example 10
 !!! note
     ROS 2 tutorials are still under active development.