Index: src/lingot-gui-mainframe.c
===================================================================
--- src/lingot-gui-mainframe.c
+++ src/lingot-gui-mainframe.c	2011-04-16 00:16:08.255304549 +0200
@@ -242,7 +242,7 @@
 							(message_type == ERROR) ? GTK_MESSAGE_ERROR
 									: ((message_type == WARNING) ? GTK_MESSAGE_WARNING
 											: GTK_MESSAGE_INFO),
-							GTK_BUTTONS_CLOSE, error_message);
+							GTK_BUTTONS_CLOSE, "%s", error_message);
 			gtk_window_set_title(GTK_WINDOW(message_dialog), (message_type
 					== ERROR) ? _("Error")
 					: ((message_type == WARNING) ? _("Warning") : _("Info")));