--- a/Plugins/ViewManagerPlugins/Tabview/Tabview.py	Mon Jan 01 19:24:24 2018 +0100
+++ b/Plugins/ViewManagerPlugins/Tabview/Tabview.py	Mon Jan 01 19:30:23 2018 +0100
@@ -926,7 +926,7 @@
         @type tuple of two int
         """
         editor = win.getEditor()
-        if fn is None:
+        if not fn:
             if not noName:
                 self.untitledCount += 1
                 noName = self.tr("Untitled {0}").format(self.untitledCount)