diff --git a/Tools/AP_Periph/Web/scripts/pppgw_webui.lua b/Tools/AP_Periph/Web/scripts/pppgw_webui.lua
index 58cf3590ba..b9a607e74d 100644
--- a/Tools/AP_Periph/Web/scripts/pppgw_webui.lua
+++ b/Tools/AP_Periph/Web/scripts/pppgw_webui.lua
@@ -442,13 +442,13 @@ end
 --[[
    client class for open connections
 --]]
-local function Client(_sock, _idx)
+local function Client(sock_in, idx_in)
    local self = {}
 
    self.closed = false
 
-   local sock = _sock
-   local idx = _idx
+   local sock = sock_in
+   local idx = idx_in
    local have_header = false
    local header = ""
    local header_lines = {}