Index: e_freerouting.c
===================================================================
--- e_freerouting.c	(revision 35636)
+++ e_freerouting.c	(revision 35637)
@@ -232,6 +232,8 @@
 	rv[0].help_text = rnd_strdup("Maximum number of postroute optimization steps");
 	rv[0].type = RND_HATT_INTEGER;
 	rv[0].default_val.lng = 12;
+	rv[0].min_val = 0;
+	rv[0].max_val = 1000;
 
 	return rv;
 }