diff --git a/po-libgimp/POTFILES.in b/po-libgimp/POTFILES.in
index e034a0967b..9c9a88a3c4 100644
--- a/po-libgimp/POTFILES.in
+++ b/po-libgimp/POTFILES.in
@@ -57,6 +57,7 @@ libgimpwidgets/gimpquerybox.c
 libgimpwidgets/gimpstock.c
 libgimpwidgets/gimpunitmenu.c
 libgimpwidgets/gimpwidgets.c
+libgimpwidgets/gimpwidgets-private.c
 libgimpwidgets/gimpwidgetsenums.c
 
 modules/color-selector-cmyk-lcms.c