diff --git a/doc/erko_howto_tools.txt b/doc/erko_howto_tools.txt
index eee61c714df8ba91089b8ed81f6c3b59454a6401..788b44a2fede23137216458cfecdfe0f5a8ea2e7 100755
--- a/doc/erko_howto_tools.txt
+++ b/doc/erko_howto_tools.txt
@@ -1189,4 +1189,4 @@ Alt-F7 to move window on screen
   > Via dop421 upe_gear:
     . ./init_upe.sh
     mkdir reginfo
-    util_unb2.py --unb2 0 --pn2 0:3 --seq REGMAPt
+    util_unb2.py --unb2 0 --pn2 0:3 --seq REGMAP