diff --git a/lib/dtutils/string.lua b/lib/dtutils/string.lua
index 7648f6f..48221f1 100644
--- a/lib/dtutils/string.lua
+++ b/lib/dtutils/string.lua
@@ -994,7 +994,7 @@ local function treat(var_string)
     log.msg(log.info, "ret_val is " .. ret_val)
 
   elseif string.match(var_string, "SEQUENCE%[") then
-    local start, width = string.match(var_string, "(%d+),(%d)")
+    local width, start = string.match(var_string, "(%d+),(%d)")
     local seq_val = tonumber(substitutes[var])
     local pat = "%0" .. width .. "d"
     substitutes[var_string] = string.format(pat, start + (seq_val - 1))