diff -Nru lightdm-1.16.3/debian/changelog lightdm-1.16.3/debian/changelog
--- lightdm-1.16.3/debian/changelog	2015-09-30 06:25:12.000000000 +0900
+++ lightdm-1.16.3/debian/changelog	2015-10-05 23:31:28.000000000 +0900
@@ -1,3 +1,10 @@
+lightdm (1.16.3-0ubuntu2) wily; urgency=medium
+
+  * debian/patches/06_remove_useless_ev.patch:
+     - Removed LANGUAGE and GDM_LANG environment variables (LP: #1502921).
+
+ -- Ikuya Awashiro <ikuya@fruitsbasket.info>  Mon, 05 Oct 2015 23:00:20 +0900
+
 lightdm (1.16.3-0ubuntu1) wily; urgency=medium
 
   * New upstream release:
diff -Nru lightdm-1.16.3/debian/patches/06_remove_useless_ev.patch lightdm-1.16.3/debian/patches/06_remove_useless_ev.patch
--- lightdm-1.16.3/debian/patches/06_remove_useless_ev.patch	1970-01-01 09:00:00.000000000 +0900
+++ lightdm-1.16.3/debian/patches/06_remove_useless_ev.patch	2015-10-05 22:59:25.000000000 +0900
@@ -0,0 +1,16 @@
+Index: lightdm-1.16.2/src/seat.c
+===================================================================
+--- lightdm-1.16.2.orig/src/seat.c
++++ lightdm-1.16.2/src/seat.c
+@@ -1001,11 +1001,6 @@ configure_session (Session *session, Ses
+         session_set_env (session, "XDG_CURRENT_DESKTOP", value);
+         g_free (value);
+     }
+-    if (language && language[0] != '\0')
+-    {
+-        session_set_env (session, "LANGUAGE", language);
+-        session_set_env (session, "GDM_LANG", language);
+-    }
+ }
+ 
+ static Session *
diff -Nru lightdm-1.16.3/debian/patches/series lightdm-1.16.3/debian/patches/series
--- lightdm-1.16.3/debian/patches/series	2015-09-07 08:49:32.000000000 +0900
+++ lightdm-1.16.3/debian/patches/series	2015-10-05 22:59:51.000000000 +0900
@@ -1,3 +1,4 @@
 04_language_handling.patch
 05_translate_debian_files.patch
 autologin-session-workaround.patch
+06_remove_useless_ev.patch