diff --git a/controller_manager/doc/userdoc.rst b/controller_manager/doc/userdoc.rst
index 8fdc4c7267..b10f7871b8 100644
--- a/controller_manager/doc/userdoc.rst
+++ b/controller_manager/doc/userdoc.rst
@@ -83,7 +83,7 @@ Subscribers
 -----------
 
 robot_description (std_msgs/msg/String)
-  String with the URDF string as robot description.
+  The URDF string as robot description.
   This is usually published by the ``robot_state_publisher`` node.