diff --git a/win_build/qgis-debug.nsi b/win_build/qgis-debug.nsi
index 7b50a3b815a..a9555ff2308 100644
--- a/win_build/qgis-debug.nsi
+++ b/win_build/qgis-debug.nsi
@@ -104,6 +104,7 @@ Section "MainSection" SEC01
   File /r "C:\dev\cpp\qgis\qgis-debug\lib"
   File /r "C:\dev\cpp\qgis\qgis-debug\share"
   File /r "C:\dev\cpp\qgis\qgis-debug\nad"
+  File /r "C:\dev\cpp\qgis\qgis-debug\msys"
  
 ; Shortcuts
 ; Next line is important - added by Tim
@@ -184,6 +185,7 @@ Section Uninstall
   RMDir /r "$INSTDIR/lib"
   RMDir /r "$INSTDIR/share"
   RMDir /r "$INSTDIR/nad"
+  RMDir /r "$INSTDIR/msys"
 ;----------------- icons and shortcuts
   Delete "$SMPROGRAMS\$ICONS_GROUP\Uninstall.lnk"
   Delete "$SMPROGRAMS\$ICONS_GROUP\Website.lnk"
diff --git a/win_build/qgis.nsi b/win_build/qgis.nsi
index 03b15a201f7..571e0c193b2 100644
--- a/win_build/qgis.nsi
+++ b/win_build/qgis.nsi
@@ -103,6 +103,7 @@ Section "MainSection" SEC01
   File /r "C:\dev\cpp\qgis\qgis-release\lib"
   File /r "C:\dev\cpp\qgis\qgis-release\share"
   File /r "C:\dev\cpp\qgis\qgis-release\nad"
+  File /r "C:\dev\cpp\qgis\qgis-release\msys"
  
 ; Shortcuts
 ; Next line is important - added by Tim
@@ -183,6 +184,7 @@ Section Uninstall
   RMDir /r "$INSTDIR/lib"
   RMDir /r "$INSTDIR/share"
   RMDir /r "$INSTDIR/nad"
+  RMDir /r "$INSTDIR/msys"
 ;----------------- icons and shortcuts
   Delete "$SMPROGRAMS\$ICONS_GROUP\Uninstall.lnk"
   Delete "$SMPROGRAMS\$ICONS_GROUP\Website.lnk"