diff --git a/po-properties/POTFILES.in b/po-properties/POTFILES.in
index 1f540520a4..7320939077 100644
--- a/po-properties/POTFILES.in
+++ b/po-properties/POTFILES.in
@@ -87,6 +87,7 @@ gtk/gtkcellrendererspinner.c
 gtk/gtkcellrenderertext.c
 gtk/gtkcellrenderertoggle.c
 gtk/gtkcellview.c
+gtk/gtkcenterbox.c
 gtk/gtkcheckbutton.c
 gtk/gtkcheckmenuitem.c
 gtk/gtkclipboard.c
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 62fc7e833c..a601c059b9 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -87,6 +87,7 @@ gtk/gtkcellrendererspinner.c
 gtk/gtkcellrenderertext.c
 gtk/gtkcellrenderertoggle.c
 gtk/gtkcellview.c
+gtk/gtkcenterbox.c
 gtk/gtkcheckbutton.c
 gtk/gtkcheckmenuitem.c
 gtk/gtkclipboard.c