diff --git a/cv5/a_train.c b/cv5/a_train.c
index 41ea869..3f25159 100644
--- a/cv5/a_train.c
+++ b/cv5/a_train.c
@@ -32,15 +32,14 @@ void print_train(struct car* first) {
 }
 
 void cancel_train(struct car* first) {   
-    //struct car* this;
+    struct car* this = first;
     if(first == NULL){
         exit(0);
     }
-    if(first->next == NULL){
-       //this = first;
-       //first = first->next;
+    if(this->next == NULL){
+       this = first->next;
        free(first);
-       //first = NULL;
+       this = NULL;
     }
     else{
         /*struct car* prev = first;