diff --git a/README.md b/README.md
index 2453e6d..7e8efa4 100644
--- a/README.md
+++ b/README.md
@@ -218,10 +218,10 @@ It can be useful to then break the flowing text manually. For this there is the
 {{ clear() }}
 ```
 
-To help with alignment, any content can be resized to be a specific width with `withwidth(width="<value>")`:
+To help with alignment, any content can be resized to be a specific width with `with_width(width="<value>")`:
 
 ```markdown
-{% withwidth(width="50%") %}
+{% with_width(width="50%") %}
 Content is maximum 50 percent!
 {% end %}
 ```
diff --git a/templates/shortcodes/withwidth.html b/templates/shortcodes/with_width.html
similarity index 100%
rename from templates/shortcodes/withwidth.html
rename to templates/shortcodes/with_width.html