diff --git a/poky/meta/lib/oeqa/selftest/cases/devtool.py b/poky/meta/lib/oeqa/selftest/cases/devtool.py
index 4eba238..b8edc89 100644
--- a/poky/meta/lib/oeqa/selftest/cases/devtool.py
+++ b/poky/meta/lib/oeqa/selftest/cases/devtool.py
@@ -57,7 +57,7 @@
                         if relpth.endswith('/'):
                             destdir = os.path.join(corecopydir, relpth)
                             # avoid race condition by not copying .pyc files YPBZ#13421,13803
-                            shutil.copytree(pth, destdir, ignore=shutil.ignore_patterns('*.pyc', '__pycache__'))
+                            shutil.copytree(pth, destdir, ignore=ignore_patterns('*.pyc', '__pycache__'))
                         else:
                             destdir = os.path.join(corecopydir, os.path.dirname(relpth))
                             bb.utils.mkdirhier(destdir)