diff --git a/list/list.h b/list/list.h
index 9b069db..691d796 100644
--- a/list/list.h
+++ b/list/list.h
@@ -22,11 +22,12 @@ int popFromTail(List *p_list);
 unsigned long int len(List *p_list);
 Node *findById(List *p_list, unsigned long int id);
 Node *findByValue(List *p_list, char type[], void *value);
-
+int releaseList(List *p_list);
+int releaseNode(Node *p_node);
 
 int insertInHead(List *p_list, Node *p_node){
 	p_list->head->last = p_node;
-	//p_node->last = NULL;
+	p_node->last = NULL;
 	p_node->next = p_list->head;
 	p_list->head = p_node;
 	return 0;
@@ -34,8 +35,26 @@ int insertInHead(List *p_list, Node *p_node){
 
 int insertInTail(List *p_list, Node *p_node){
 	p_list->tail->next = p_node;
-	//p_node->next = NULL;
+	p_node->next = NULL;
 	p_node->last = p_list->tail;
 	p_list->tail = p_node;
 	return 0;
 }
+
+int releaseNode(Node *p_node){
+	free(p_node->value);
+	free(p_node);
+	return 0;
+}
+
+int releaseList(List *p_list){
+	Node *p_node, *pl_node;
+	p_node = p_list->head;
+	while (p_node != NULL){
+		pl_node = p_node;
+		p_node = p_node->next;
+		releaseNode(pl_node);
+	}
+	free(p_list);
+	return 0;
+}