diff --git a/cv6/a_station.c b/cv6/a_station.c
index 8baf409..c6cb67d 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 = 5381;
     int c;
-    while (c = *str++)
+    while (c = *target++)
         hash = ((hash << 5) + hash) + c;
 
     return hash;