diff --git a/projects/robots/clearpath/heron/protos/docs/heron.md b/projects/robots/clearpath/heron/protos/docs/heron.md
index 425e22eb3ef..a7466545d7d 100644
--- a/projects/robots/clearpath/heron/protos/docs/heron.md
+++ b/projects/robots/clearpath/heron/protos/docs/heron.md
@@ -2,8 +2,8 @@ The [clearpath's Heron USV](https://robots.ros.org/clearpath-heron-usv/) is a US
 
 ### Motors
 
-  There are 2 engines, engine name ```left_motor```and ```right_motor``.
-  You can add new Camera, GPS or other sensors you want under ``body_slot```.
+There are 2 motor, motor name ```left_motor```and ```right_motor``.
+You can add new Camera, GPS or other sensors you want under ```body_slot```.
 
 ### Movie Presentation