diff --git a/IPython/core/tests/test_display.py b/IPython/core/tests/test_display.py
index d44a249..a1c26d1 100644
--- a/IPython/core/tests/test_display.py
+++ b/IPython/core/tests/test_display.py
@@ -120,15 +120,13 @@ def test_displayobject_repr():
     h = display.HTML('<br />')
     nt.assert_equal(repr(h), '<IPython.core.display.HTML object>')
     h._show_mem_addr = True
-    nt.assert_equal(
-        repr(h), '<IPython.core.display.HTML object at %s>' % hex(id(h)))
+    nt.assert_equal(repr(h), object.__repr__(h))
     h._show_mem_addr = False
     nt.assert_equal(repr(h), '<IPython.core.display.HTML object>')
 
     j = display.Javascript('')
     nt.assert_equal(repr(j), '<IPython.core.display.Javascript object>')
     j._show_mem_addr = True
-    nt.assert_equal(
-        repr(j), '<IPython.core.display.Javascript object at %s>' % hex(id(j)))
+    nt.assert_equal(repr(j), object.__repr__(j))
     j._show_mem_addr = False
     nt.assert_equal(repr(j), '<IPython.core.display.Javascript object>')