diff --git a/configtool/boardpanel.py b/configtool/boardpanel.py
index f44f30b..9293b91 100644
--- a/configtool/boardpanel.py
+++ b/configtool/boardpanel.py
@@ -456,7 +456,8 @@ class BoardPanel(wx.Panel):
 
   def saveConfigFile(self, path):
     if os.path.basename(path) in protectedFiles:
-      dlg = wx.MessageDialog(self, "Unable to overwrite %s." % path,
+      dlg = wx.MessageDialog(self, "It's not allowed to overwrite files "
+                             "distributed by Teacup. Choose another name.",
                              "Protected file error", wx.OK + wx.ICON_ERROR)
       dlg.ShowModal()
       dlg.Destroy()
diff --git a/configtool/printerpanel.py b/configtool/printerpanel.py
index f7e2f52..3a48f82 100644
--- a/configtool/printerpanel.py
+++ b/configtool/printerpanel.py
@@ -315,7 +315,8 @@ class PrinterPanel(wx.Panel):
 
   def saveConfigFile(self, path):
     if os.path.basename(path) in protectedFiles:
-      dlg = wx.MessageDialog(self, "Unable to overwrite %s." % path,
+      dlg = wx.MessageDialog(self, "It's not allowed to overwrite files "
+                             "distributed by Teacup. Choose another name.",
                              "Protected file error", wx.OK + wx.ICON_ERROR)
       dlg.ShowModal()
       dlg.Destroy()