diff --git a/cv9/snake.c b/cv9/snake.c
index 91b4fc4..5e32b38 100644
--- a/cv9/snake.c
+++ b/cv9/snake.c
@@ -12,8 +12,8 @@ struct snake* add_snake(struct snake* snake,int x,int y){
 struct snake* remove_snake(struct snake* snake) {
     struct snake* head;
     struct snake* this = head;
-    if (this!= NULL) {
-        this = snake->next;
+    if (head!= NULL) {
+        head = head->next;
         free(this);
     }
     return snake;