--- navit-0.0.3.abk/src/mapset.c	2007-08-28 19:31:11.000000000 +0200
+++ navit-0.0.3/src/mapset.c	2007-12-14 12:53:29.000000000 +0100
@@ -89,8 +89,18 @@
 	this->item=item;
 	this->search_attr=search_attr;
 	this->partial=partial;
-	this->ms=map_search_new(this->map->data, item, search_attr, partial);
-	return this;
+    if (this->map)
+    {
+        this->ms=map_search_new(this->map->data, item, search_attr, partial);
+    }
+    else
+    {
+        printf("Can't search in a NULL mapset!");
+        exit(-1);
+    }
+
+    return this;
+
 }
 
 struct item *