diff --git a/LayoutOptions.md b/LayoutOptions.md
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 # Layout Options
 
-PlantUML uses [Graphviz](https://www.graphviz.org/) for his graph visualization. Thus the rendering itself is done automatically for you - that it one of the biggest advantages of using PlantUML.
+PlantUML uses [Graphviz](https://www.graphviz.org/) for its graph visualization. Thus the rendering itself is done automatically for you - that it one of the biggest advantages of using PlantUML.
 
 ...and also sometimes one of the biggest disadvantages, if the rendering is not what the user intended.