diff --git a/doc/source/user_guide/automesh.rst b/doc/source/user_guide/automesh.rst
index b967120819..7046eaf24d 100644
--- a/doc/source/user_guide/automesh.rst
+++ b/doc/source/user_guide/automesh.rst
@@ -203,7 +203,7 @@ Some guidelines for the thin volume mesh controls:
  - Always choose the one with most features as the source. 
  - Target face zonelets cannot be adjacent to regions with cells whereas source face zonelets can. 
  - Sides of the new thin volume control cannot be adjacent to regions with existing cells. 
- - Sides of one thin volume control can only be a Source to another thin volume control. 
+ - Sides of one thin volume control can only be a source to another thin volume control. 
 
 The below example shows how to: