diff --git a/ostap/fitting/tests/test_fitting_selectors.py b/ostap/fitting/tests/test_fitting_selectors.py
index 697a8449..df0d2ba7 100755
--- a/ostap/fitting/tests/test_fitting_selectors.py
+++ b/ostap/fitting/tests/test_fitting_selectors.py
@@ -51,7 +51,7 @@ def create_tree ( fname , nentries ) :
     var2 = array ( 'd', [0.])
     var3 = array ( 'd', [0.])
     
-    with ROOTCWD() , ROOT.TFile.Open ( fname , 'new' ) as root_file:
+    with ROOT.TFile ( fname , 'new' ) as root_file:
         
         tree = ROOT.TTree ( 'S','tree' )
         tree.SetDirectory ( root_file  )