diff --git a/source/texk/web2c/luatexdir/lua/luatex-core.c b/source/texk/web2c/luatexdir/lua/luatex-core.c
index a7dc048677d97dd9a30e2d7b9769fa975c0ab660..de03c790e48bba559104f90d0a945f505214f110 100644
--- a/source/texk/web2c/luatexdir/lua/luatex-core.c
+++ b/source/texk/web2c/luatexdir/lua/luatex-core.c
@@ -221,40 +221,40 @@ int load_luatex_core_lua (lua_State * L)
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+    0x62, 0x79, 0x74, 0x65, 0x28, 0x63, 0x29, 0x29, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+    0x20, 0x65, 0x6e, 0x64, 0x29, 0x29, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x65, 0x6e, 0x64, 0x0a, 0x0a,
+    0x65, 0x6e, 0x64, 0x0a, 0x0a, 0x00
   };
   return luaL_dostring(L, (const char*) luatex_core_lua);
 }
\ No newline at end of file
diff --git a/source/texk/web2c/luatexdir/lua/luatex-core.lua b/source/texk/web2c/luatexdir/lua/luatex-core.lua
index 134339826fa1e6a82b03d1786ee8d0973b665b73..3d4658b3a8454ceba6c26679d8529b1b1fcd6cef 100644
--- a/source/texk/web2c/luatexdir/lua/luatex-core.lua
+++ b/source/texk/web2c/luatexdir/lua/luatex-core.lua
@@ -132,8 +132,8 @@ if kpseused == 1 then
             if k ~= 'gc' then
                 ffi[k] = nil
             end
-            ffi = nil
         end
+        ffi = nil
     end
 
     -- os.[execute|os.spawn|os.exec] already are shellescape aware)