diff --git a/catkin_ws/README.rst b/catkin_ws/README.rst
index 87b78f1e5c6bc860d8f0c6df9883901b4997dd3a..ef2143177e3bd054666c888d43156ab7e0dc9f55 100644
--- a/catkin_ws/README.rst
+++ b/catkin_ws/README.rst
@@ -4,6 +4,9 @@ Catkin Workspace
 
 This workspace is based on ROS noetic and catkin tools. 
 
+.. important:: 
+   You need to model your robots surrounding, so that collisions can be avoided.
+
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 Automated Behavior
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