diff --git a/README.md b/README.md
index efa2931e..69a293d6 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,11 @@ $ ./autogen.sh
 $ make
 ```
 ##### MinGW32/MSYS2
+preparation:
+```
+pacman -S base-devel mingw-w64-i686-toolchain autoconf automake mingw-w64-i686-SDL2 mingw-w64-i686-gtk2
+```
+build:
 ```
 $ cd macemu/BasiliskII/src/Windows
 $ ../Unix/autogen.sh
@@ -79,6 +84,9 @@ $ ./autogen.sh
 $ make
 ```
 ##### MinGW32/MSYS2
+preparation: same as BasiliskII  
+  
+build:
 ```
 $ cd macemu/SheepShaver
 $ make links