diff --git a/mininet/test/runner.py b/mininet/test/runner.py
index 834a9f4..a347c9b 100755
--- a/mininet/test/runner.py
+++ b/mininet/test/runner.py
@@ -11,6 +11,7 @@ import os
 import sys
 from mininet.util import ensureRoot
 from mininet.clean import cleanup
+from mininet.log import setLogLevel
 
 def runTests( testDir, verbosity=1 ):
     "discover and run all tests in testDir"
@@ -23,6 +24,7 @@ def runTests( testDir, verbosity=1 ):
     unittest.TextTestRunner( verbosity=verbosity ).run( testSuite )
 
 if __name__ == '__main__':
+    setLogLevel( 'warning' )
     # get the directory containing example tests
     testDir = os.path.dirname( os.path.realpath( __file__ ) )
     verbosity = 2 if '-v' in sys.argv else 1