diff --git a/django/test/simple.py b/django/test/simple.py
index 18ba063c584..4ee14d19eab 100644
--- a/django/test/simple.py
+++ b/django/test/simple.py
@@ -99,6 +99,14 @@ def build_test(label):
     else: # label is app.TestClass.test_method
         return TestClass(parts[2])
 
+# Python 2.3 compatibility: TestSuites were made iterable in 2.4.
+# We need to iterate over them, so we add the missing method when
+# necessary.    
+try:
+    getattr(unittest.TestSuite, '__iter__')
+except AttributeError:
+    setattr(unittest.TestSuite, '__iter__', lambda s: iter(s._tests))
+
 def partition_suite(suite, classes, bins):
     """
     Partitions a test suite by test type.