diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 982eedb..2a0dd24 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -2484,7 +2484,10 @@
 	switch (op) {
 
 	case Py_EQ:
-		res = (self == other) ? Py_True : Py_False;
+		/* Return NotImplemented instead of False, so if two
+		   objects are compared, both get a chance at the
+		   comparison.  See issue #1393. */
+		res = (self == other) ? Py_True : Py_NotImplemented;
 		Py_INCREF(res);
 		break;