diff --git a/Lib/pickle.py b/Lib/pickle.py
index 97eb4e45bc8..7458792cdcc 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -843,8 +843,7 @@ def load_build(self):
         try:
             setstate = inst.__setstate__
         except AttributeError:
-            for key in value.keys():
-                setattr(inst, key, value[key])
+	    inst.__dict__.update(value)
         else:
             setstate(value)
     dispatch[BUILD] = load_build