diff --git a/scotests/sco_fake_gen.py b/scotests/sco_fake_gen.py
index f0df52bf96..531142555a 100644
--- a/scotests/sco_fake_gen.py
+++ b/scotests/sco_fake_gen.py
@@ -33,10 +33,10 @@ import sco_edit_ue
 import sco_codes_parcours
 import sco_saisie_notes
 
-DEMODIR = sco_utils.SCO_SRCDIR + "/scotests/demo/"
-NOMS = [x.strip() for x in open(DEMODIR + "/noms.txt").readlines()]
-PRENOMS_H = [x.strip() for x in open(DEMODIR + "/prenoms-h.txt").readlines()]
-PRENOMS_F = [x.strip() for x in open(DEMODIR + "/prenoms-f.txt").readlines()]
+DEMO_DIR = sco_utils.SCO_SRC_DIR + "/scotests/demo/"
+NOMS = [x.strip() for x in open(DEMO_DIR + "/noms.txt").readlines()]
+PRENOMS_H = [x.strip() for x in open(DEMO_DIR + "/prenoms-h.txt").readlines()]
+PRENOMS_F = [x.strip() for x in open(DEMO_DIR + "/prenoms-f.txt").readlines()]
 # nb: en python2, les chaines ci-dessus sont en utf8