diff --git a/src/_pytest/pytester.py b/src/_pytest/pytester.py
index fae243a50..a959516b0 100644
--- a/src/_pytest/pytester.py
+++ b/src/_pytest/pytester.py
@@ -693,7 +693,7 @@ class Testdir(object):
             else:
                 raise LookupError(
                     "{} cant be found as module or package in {}".format(
-                        func_name, example_dir.bestrelpath(self.request.confg.rootdir)
+                        func_name, example_dir.bestrelpath(self.request.config.rootdir)
                     )
                 )
         else: