diff -Nur xfce4-timer-plugin-1.6.0/src/xfcetimer.c xfce4-timer-plugin-1.6.0.orig/src/xfcetimer.c
--- xfce4-timer-plugin-1.6.0/src/xfcetimer.c 2015-03-29 07:53:22.426521717 -0600
+++ xfce4-timer-plugin-1.6.0.orig/src/xfcetimer.c 2015-03-29 07:51:50.913218434 -0600
@@ -192,7 +192,7 @@
dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL,
GTK_MESSAGE_WARNING,
- GTK_BUTTONS_NONE, dialog_message);
+ GTK_BUTTONS_NONE, "%s", dialog_message);
gtk_window_set_title ((GtkWindow *) dialog, dialog_title);