diff --git a/cv9/snake.c b/cv9/snake.c
index d242234..00e921e 100644
--- a/cv9/snake.c
+++ b/cv9/snake.c
@@ -2,13 +2,14 @@
 #include <stdlib.h>
 
 struct snake* add_snake(struct snake* snake,int x,int y){
-    if (snake == NULL) {
+    struct snake* head = calloc(1,sizeof(struct snake));
+    if (head == NULL) {
     return NULL;
     }
-    struct snake* head = calloc(1,sizeof(struct snake));
     head->x = x;
     head->y = y;
     head->next = snake;
+    return head;
 }
 
 struct snake* remove_snake(struct snake* snake){