diff --git a/thunar/thunar-properties-dialog.c b/thunar/thunar-properties-dialog.c
index 51da9bd4e0d13f36185bb08581b9491f68022a7b..9e5a39da6ed8e4172bce3a060532f83d492dca0d 100644
--- a/thunar/thunar-properties-dialog.c
+++ b/thunar/thunar-properties-dialog.c
@@ -873,7 +873,7 @@ thunar_properties_dialog_update (ThunarPropertiesDialog *dialog)
     str = g_strdup_printf (_("link to %s"), thunar_file_get_symlink_target (dialog->file));
   else
     str = g_content_type_get_description (content_type);
-  gtk_widget_set_tooltip_text (dialog->kind_ebox, str);
+  gtk_widget_set_tooltip_text (dialog->kind_ebox, content_type);
   gtk_label_set_text (GTK_LABEL (dialog->kind_label), str);
   g_free (str);