diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
index 74417c1..994e088 100644
--- a/Lib/test/test_pdb.py
+++ b/Lib/test/test_pdb.py
@@ -1093,7 +1093,7 @@
 
 def load_tests(*args):
     from test import test_pdb
-    suites = [unittest.makeSuite(PdbTestCase)]
+    suites = [unittest.makeSuite(PdbTestCase), doctest.DocTestSuite(test_pdb)]
     return unittest.TestSuite(suites)