diff --git a/src/apps/lwaftr/lwutil.lua b/src/apps/lwaftr/lwutil.lua
index c1e98717f7..7525795e1c 100644
--- a/src/apps/lwaftr/lwutil.lua
+++ b/src/apps/lwaftr/lwutil.lua
@@ -6,7 +6,6 @@ local S = require("syscall")
 local bit = require("bit")
 local ffi = require("ffi")
 local lib = require("core.lib")
-local corelib = require("core.lib")
 
 
 local band = bit.band
@@ -27,7 +26,7 @@ local ntohs = lib.ntohs
 function produce_instance_configs(conf)
    local ret = {}
    for device, queues in pairs(conf.softwire_config.instance) do
-      ret[device] = corelib.deepcopy(conf)
+      ret[device] = lib.deepcopy(conf)
       ret[device].softwire_config.instance = {[device]=queues}
    end
    return ret
diff --git a/src/lib/yang/snabb-softwire-v2.yang b/src/lib/yang/snabb-softwire-v2.yang
index 65e9241ede..c0945d904f 100644
--- a/src/lib/yang/snabb-softwire-v2.yang
+++ b/src/lib/yang/snabb-softwire-v2.yang
@@ -706,7 +706,7 @@ module snabb-softwire-v2 {
         type uint16;
         default 1460;
         description
-         "Maximm packet size to recieve on the IPv6 interface.";
+         "Maximum packet size to recieve on the IPv6 interface.";
       }
 
       uses traffic-filters;