diff --git a/hashtable.h b/hashtable.h
index b354521..ad4ce58 100644
--- a/hashtable.h
+++ b/hashtable.h
@@ -22,8 +22,6 @@ typedef struct entry * hashtable_iterator_t;
 
 // data deallocator
 typedef void(*hashtable_dealloc)(void*);
-// data copy and allocator
-typedef void(*hashtable_alloc)(void*);
 
 extern int key_compare(entry_key_t one, entry_key_t two);
 extern entry_hash_t key_hash(entry_key_t key);
@@ -38,10 +36,11 @@ struct hashtable {
 	struct entry * data;
 	size_t len, count;
 
-	hashtable_alloc alloc_data;
 	hashtable_dealloc dealloc_data;
 };
 
+extern void hashtable_init(struct hashtable * table);
+
 extern hashtable_iterator_t hashtable_end(struct hashtable * table);
 
 /**
diff --git a/test_hashtable.c b/test_hashtable.c
index bc4c351..35d8b5c 100644
--- a/test_hashtable.c
+++ b/test_hashtable.c
@@ -42,6 +42,13 @@ void testadd() {
 	pass();
 }
 
+volatile int number_copied = 0;
+
+void* test_copy(void * data) {
+	number_copied++;
+	return data;
+}
+
 void testget()  {
 	init("get");