diff --git a/packaging/Windows/ATCS_Installer.nsi b/packaging/Windows/ATCS_Installer.nsi
index 30a275d..8d0031a 100644
--- a/packaging/Windows/ATCS_Installer.nsi
+++ b/packaging/Windows/ATCS_Installer.nsi
@@ -55,6 +55,8 @@ Section install
   SetOutPath $INSTDIR
   file "ATCS.ico"
   
+  Delete "$INSTDIR\lib\*"
+  
   Call GetJRE
   Pop $R0
   FileOpen $9 "ATCS.cmd" w