diff --git a/Install-MMGen-on-Microsoft-Windows.md b/Install-MMGen-on-Microsoft-Windows.md
index a9bd32b..121c141 100644
--- a/Install-MMGen-on-Microsoft-Windows.md
+++ b/Install-MMGen-on-Microsoft-Windows.md
@@ -382,6 +382,7 @@ commands:
 	$ git checkout master
 	$ git pull
 	$ git checkout stable_msys2 # See 'Note' to step 9
+	$ rm -r dist/* build/*
 
 Then invoke the following (for newer MSYS2 installations):