diff --git a/poky/bitbake/bin/bitbake-selftest b/poky/bitbake/bin/bitbake-selftest
index aec4706..f25f23b 100755
--- a/poky/bitbake/bin/bitbake-selftest
+++ b/poky/bitbake/bin/bitbake-selftest
@@ -7,6 +7,8 @@
 
 import os
 import sys, logging
+import warnings
+warnings.simplefilter("default")
 sys.path.insert(0, os.path.join(os.path.dirname(os.path.dirname(__file__)), 'lib'))
 
 import unittest