diff --git a/README.md b/README.md
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--- a/README.md
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@@ -58,7 +58,7 @@ Default duplicate is `1 1 1`. This is used to replicate the element along each d
 **Dimensions**
 
 ```
-dimensions dimx dimy dimz
+dim dimx dimy dimz
 ```
 
 There is no default dimensions as duplicate is the default option. This command assigns a box with user-assigned dimensions and fills it with the desired element. By default atoms fill in the jagged edges at the boundaries if the dimensions command is included.