diff --git a/knowledge base/create png images from svg files.placeholder b/knowledge base/create png images from svg files.placeholder
index 7135e93..e0ce097 100644
--- a/knowledge base/create png images from svg files.placeholder	
+++ b/knowledge base/create png images from svg files.placeholder	
@@ -1,8 +1,8 @@
 ```sh
 brew install 'librsvg'
 
-rsvg-convert -h '96' 'icon.svg' > 'icon-96.png'
-rsvg-convert -h '96' 'icon.svg' -o 'icon-96.png'
+rsvg-convert -ah '96' 'icon.svg' > 'icon-96.png'
+rsvg-convert -ah '96' 'icon.svg' -o 'icon-96.png'
 ```
 
 [convert an svg to png with right click on macos]: https://medium.com/@instanceofMA/convert-an-svg-to-png-with-right-click-on-macos-2353d151f4eb