diff --git a/cv6/a_station.c b/cv6/a_station.c
index 7ef4ea9..7db3a76 100644
--- a/cv6/a_station.c
+++ b/cv6/a_station.c
@@ -29,7 +29,7 @@ void destroy_station(struct station* station){
 int select_track(struct station* station, const char* target){
     unsigned long hash=0;
     int i,len;
-for(hash = i = 0; i < len; ++i)
+for(hash = i = 0; i <'\0' ; ++i)
     {
         hash += target[i];
         hash += (hash << 10);