diff --git a/Contrib/System/System.nsi b/Contrib/System/System.nsi
index 1b50c32b..c3bca8c6 100644
--- a/Contrib/System/System.nsi
+++ b/Contrib/System/System.nsi
@@ -103,6 +103,9 @@ enumex: ; End of drives or user cancel
  
      MessageBox MB_OK "GetFileSysTime example: file '$CMDLINE', year $1, month $2, dow $3, day $4, hour $5, min $6, sec $7, ms $8"     
 
+     ; last plugin call must not have /NOUNLOAD so NSIS will be able to delete the temporary DLL
+     SetPluginUnload manual
+
      ; free memory from SYSTEMTIME
      System::Free $R0