gistfile1.diff

diff --git a/builtin/mainmenu.lua b/builtin/mainmenu.lua
index 73f0436..d8c2b63 100644
--- a/builtin/mainmenu.lua
+++ b/builtin/mainmenu.lua
@@ -178,7 +178,7 @@ function update_menu()
        if gamedata.errormessage ~= nil then
                formspec = "size[12,5.2]" ..
                        "textarea[1,2;10,2;;ERROR: " ..
-                       gamedata.errormessage ..
+                       engine.formspec_escape(gamedata.errormessage) ..
                        ";]"..
                        "button[4.5,4.2;3,0.5;btn_error_confirm;" .. fgettext("Ok") .. "]"
        else