diff --git a/cv7/a_station.c b/cv7/a_station.c
index bbb7c51..cd1c8b6 100644
--- a/cv7/a_station.c
+++ b/cv7/a_station.c
@@ -25,14 +25,11 @@ void destroy_station(struct station* station){
 }
 
 int select_track(struct station* station, const char* target){
-       if (isalpha(target[0])) {
-        if (isupper(target[0])) {
-            return target[0] - 'A';
-        } else {
-            return target[0] - 'a';
-        }
+      if (isalpha(target[0])) {
+        char first_letter = tolower(target[0]); 
+        return first_letter - 'a'; 
     } else {
-        return 0;
+        return 0; 
     }
 }