diff --git a/cv5/a_train.c b/cv5/a_train.c
index ef944ac..6acbafc 100644
--- a/cv5/a_train.c
+++ b/cv5/a_train.c
@@ -38,8 +38,8 @@ void cancel_train(struct car* first) {
         exit(0);
     }
     else if(first->next == NULL){
-        free(first->next);
-        //exit(0);
+        free(first);
+        first = NULL;
     }
     cancel_train(first->next);
     free(first);