--- geo_print.c.orig	2004-10-19 16:24:09.000000000 +0200
+++ geo_print.c	2009-10-31 22:50:30.000000000 +0100
@@ -261,7 +261,7 @@
 static void DefaultPrint(char *string, void *aux)
 {
     /* Pretty boring */
-    fprintf((FILE *)aux,string);
+    fprintf((FILE *)aux,string, "%s" );
 }