diff --git a/src/atom.coffee b/src/atom.coffee
index 8903a9cef..ddc2e024d 100644
--- a/src/atom.coffee
+++ b/src/atom.coffee
@@ -786,6 +786,8 @@ class Atom extends Model
   showSaveDialogSync: (options={}) ->
     if _.isString(options)
       options = defaultPath: options
+    else
+      options = _.clone(options)
     currentWindow = @getCurrentWindow()
     dialog = remote.require('dialog')
     options.title ?= 'Save File'