diff -Nura gnome-settings-daemon-3.24.3/plugins/keyboard/gsd-keyboard-manager.c gnome-settings-daemon-3.24.3_new/plugins/keyboard/gsd-keyboard-manager.c
--- gnome-settings-daemon-3.24.3/plugins/keyboard/gsd-keyboard-manager.c	2017-08-28 17:44:30.078220888 +0800
+++ gnome-settings-daemon-3.24.3_new/plugins/keyboard/gsd-keyboard-manager.c	2017-08-28 17:49:05.435064987 +0800
@@ -478,7 +478,11 @@
                 else
                         id = g_strdup (layouts[i]);
 
-                g_variant_builder_add (&builder, "(ss)", INPUT_SOURCE_TYPE_XKB, id);
+		if (!g_strcmp0 (id, "jp"))
+                        g_variant_builder_add (&builder, "(ss)", INPUT_SOURCE_TYPE_IBUS, "mozc-jp");
+                else
+                        g_variant_builder_add (&builder, "(ss)", INPUT_SOURCE_TYPE_XKB, id);
+
                 g_free (id);
         }