diff --git a/po/POTFILES.in b/po/POTFILES.in
index 78dee6ba5d..17a3f01758 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -409,6 +409,7 @@ app/widgets/gimpdnd.c
 app/widgets/gimpdnd-xds.c
 app/widgets/gimpdock.c
 app/widgets/gimpdockable.c
+app/widgets/gimpdockwindow.c
 app/widgets/gimpdocumentview.c
 app/widgets/gimpdrawabletreeview.c
 app/widgets/gimpdynamicseditor.c