diff --git a/runtests.py b/runtests.py
index 8ec0f54..cf97afc 100644
--- a/runtests.py
+++ b/runtests.py
@@ -7,6 +7,8 @@
 import unittest
 from trace import fullmodname
 
+logging.basicConfig(level=logging.CRITICAL)
+
 APP_ENGINE_PATH='../google_appengine'
 
 # Conditional import of cleanup function