diff --git a/gtk/gtkfontbutton.c b/gtk/gtkfontbutton.c
index f7d65efb95..21d64850f0 100644
--- a/gtk/gtkfontbutton.c
+++ b/gtk/gtkfontbutton.c
@@ -1183,8 +1183,10 @@ gtk_font_button_update_font_info (GtkFontButton *font_button)
 
   if (font_button->priv->show_size) 
     {
-      gchar *size = g_strdup_printf ("%g",
-                                     pango_font_description_get_size (priv->font_desc) / (double)PANGO_SCALE);
+      /* mirror Pango, which doesn't translate this either */
+      gchar *size = g_strdup_printf ("%g%s",
+                                     pango_font_description_get_size (priv->font_desc) / (double)PANGO_SCALE,
+                                     pango_font_description_get_size_is_absolute (priv->font_desc) ? "px" : "");
       
       gtk_label_set_text (GTK_LABEL (font_button->priv->size_label), size);