diff --git a/direct/src/showbase/ShowBase.py b/direct/src/showbase/ShowBase.py
index 17d426b3d3..c7e3ed2527 100644
--- a/direct/src/showbase/ShowBase.py
+++ b/direct/src/showbase/ShowBase.py
@@ -1213,16 +1213,16 @@ class ShowBase(DirectObject.DirectObject):
         for i in range(win.getNumInputDevices()):
             name = win.getInputDeviceName(i)
             mk = self.dataRoot.attachNewNode(MouseAndKeyboard(win, i, name))
-            mw = mk.attachNewNode(MouseWatcher(name))
+            mw = mk.attachNewNode(MouseWatcher("watcher%s" % (i)))
             mb = mw.node().getModifierButtons()
             mb.addButton(KeyboardButton.shift())
             mb.addButton(KeyboardButton.control())
             mb.addButton(KeyboardButton.alt())
             mb.addButton(KeyboardButton.meta())
             mw.node().setModifierButtons(mb)
-            bt = mw.attachNewNode(ButtonThrower(name))
+            bt = mw.attachNewNode(ButtonThrower("buttons%s" % (i)))
             if (i != 0):
-                bt.node().setPrefix('mousedev'+str(i)+'-')
+                bt.node().setPrefix('mousedev%s-' % (i))
             mods = ModifierButtons()
             mods.addButton(KeyboardButton.shift())
             mods.addButton(KeyboardButton.control())