diff -r 7516d3820146 -r 14fe8320b7d2 Lib/test/test_dict.py
--- a/Lib/test/test_dict.py	Wed Jun 18 15:37:29 2014 -0600
+++ b/Lib/test/test_dict.py	Thu Jun 19 18:04:11 2014 -0700
@@ -672,6 +672,11 @@
             pass
         self._tracked(MyDict())
 
+    def test_list_equality(self):
+        class A(dict): pass
+        for dtype in (A, dict):
+            self.assertEquals([dtype()], [dict()])
+
 
 from test import mapping_tests
 
diff -r 7516d3820146 -r 14fe8320b7d2 src/org/python/core/PyDictionary.java
--- a/src/org/python/core/PyDictionary.java	Wed Jun 18 15:37:29 2014 -0600
+++ b/src/org/python/core/PyDictionary.java	Thu Jun 19 18:04:11 2014 -0700
@@ -732,19 +732,15 @@
 
     @Override
     public boolean equals(Object obj) {
-        if (obj == null) {
-            return false;
+        if (this == obj) {
+            return true;
         }
-        if (getClass() != obj.getClass()) {
-            return false;
+        if (obj instanceof PyDictionary) {
+            return ((PyDictionary) obj).getMap().equals(getMap());
+        } else if (obj instanceof Map) {
+            return getMap().equals((Map) obj);
         }
-        final PyDictionary other = (PyDictionary) obj;
-        ConcurrentMap<PyObject, PyObject> map = getMap();
-        ConcurrentMap<PyObject, PyObject> otherMap = other.getMap();
-        if (map != otherMap && (map == null || !map.equals(otherMap))) {
-            return false;
-        }
-        return true;
+        return false;
     }
 
     @ExposedMethod(doc = BuiltinDocs.dict___hash___doc)