diff --git a/Tools/AP_Periph/Web/scripts/pppgw_webui.lua b/Tools/AP_Periph/Web/scripts/pppgw_webui.lua
index 3390a89dc4bbdb..64b620f171c966 100644
--- a/Tools/AP_Periph/Web/scripts/pppgw_webui.lua
+++ b/Tools/AP_Periph/Web/scripts/pppgw_webui.lua
@@ -933,6 +933,9 @@ local function Client(_sock, _idx)
 
    function self.remove()
       DEBUG(string.format("%u: removing client OFFSET=%u", idx, offset))
+      if self.closed then
+         return
+      end
       sock:close()
       self.closed = true
    end