diff --git a/readme.md b/readme.md
index e3594802..44823daf 100644
--- a/readme.md
+++ b/readme.md
@@ -24,6 +24,11 @@ Also available for [Max Payne 3](https://github.com/ThirteenAG/MaxPayne3.FusionF
 
 > [!WARNING]
 > Non-Windows users (Proton/Wine) need to perform a [DLL override](https://cookieplmonster.github.io/setup-instructions/#proton-wine).
+> 
+> Additionally:
+> * Install and run Protontricks.
+> * Select "Grand Theft Auto IV" -> "Select the default Wineprefix" -> "Install a Windows DLL or component".
+> * Search for "d3dx9_43", select it and click OK.
 
 > [!IMPORTANT]
 > This fix was tested only with latest official update and latest [ASI Loader](https://github.com/ThirteenAG/Ultimate-ASI-Loader/releases/latest/download/Ultimate-ASI-Loader.zip) (included in the archive).