Index: README-WINDOWS.md
==================================================================
--- README-WINDOWS.md
+++ README-WINDOWS.md
@@ -62,11 +62,12 @@
 
 Getting, building and installing ObjFW
 --------------------------------------
 
   Start the MinGW-w64 Win32 or Win64 Shell (depening on what version you want
-  to build) and check out ObjFW:
+  to build - do *not* use the MSYS2 Shell shortcut, but use the MinGW-w64 Win32
+  or Win64 Shell shortcut instead!) and check out ObjFW:
 
     $ git clone https://webkeks.org/git/objfw.git
 
   You can also download a release tarball if you want. Now go to the newly
   checked out repository and build and install it: