diff --git a/client/luascripts/calc_di.lua b/client/luascripts/hf_mf_uidkeycalc.lua
similarity index 97%
rename from client/luascripts/calc_di.lua
rename to client/luascripts/hf_mf_uidkeycalc.lua
index 737d993af..88330ae85 100644
--- a/client/luascripts/calc_di.lua
+++ b/client/luascripts/hf_mf_uidkeycalc.lua
@@ -13,13 +13,13 @@ Algo not found by me.
 ]]
 example = [[
      -- if called without, it reads tag uid
-     script run calc_di
+     script run hf_mf_uidkeycalc
 
      --
-     script run calc_di -u 11223344556677
+     script run hf_mf_uidkeycalc -u 11223344556677
 ]]
 usage = [[
-script run calc_di -h -u <uid>
+script run hf_mf_uidkeycalc -h -u <uid>
 ]]
 arguments = [[
     -h             : this help