diff --git a/script/test/otf_post_mortem.py b/script/test/otf_post_mortem.py
index b8645fa..54fb186 100644
--- a/script/test/otf_post_mortem.py
+++ b/script/test/otf_post_mortem.py
@@ -16,7 +16,7 @@
 # scans C
 caput('X11MA-KEI10:RANGE', 7)
 caput('X11MA-KEI11:RANGE', 8)
-caput('X11MA-KEI12:RANGE', 9)
+caput('X11MA-KEI12:RANGE', 10)
 nr_loops=3
 loop_count = 0
 while loop_count < nr_loops: