diff --git a/ImportExcel.psm1 b/ImportExcel.psm1
index 458b0d6..bc76c78 100644
--- a/ImportExcel.psm1
+++ b/ImportExcel.psm1
@@ -158,7 +158,7 @@ function Export-Excel {
             }
         }
 
-        $ws.Protection.SetPassword($Password)
+        if($Password) { $ws.Protection.SetPassword($Password) }
 
         $pkg.Save()
         $pkg.Dispose()