diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index bc67f78..704ad77 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -240,7 +240,7 @@
          findleaks=False, use_resources=None, trace=False, coverdir='coverage',
          runleaks=False, huntrleaks=False, verbose2=False, print_slow=False,
          random_seed=None, use_mp=None, verbose3=False, forever=False,
-         header=False, timeout=None):
+         header=False, timeout=30*60):
     """Execute a test suite.
 
     This also parses command-line options and modifies its behavior