diff --git a/mem-pool.h b/mem-pool.h
index ca062c9..870161a 100644
--- a/mem-pool.h
+++ b/mem-pool.h
@@ -24,10 +24,10 @@ struct mem_pool {
 /*
  * Initialize mem_pool with specified initial size.
  */
-void mem_pool_init(struct mem_pool **mem_pool, size_t initial_size);
+void mem_pool_init(struct mem_pool *pool, size_t initial_size);
 
 /*
- * Discard a memory pool and free all the memory it is responsible for.
+ * Discard all the memory the memory pool is responsible for.
  */
 void mem_pool_discard(struct mem_pool *mem_pool, int invalidate_memory);