diff --git a/include/arena.h b/include/arena.h
index f5618d8..397da80 100644
--- a/include/arena.h
+++ b/include/arena.h
@@ -36,7 +36,7 @@ typedef struct {
     };
 } ArenaResult;
 
-ArenaResult arena_init(void *buffer, size_t size);
+ArenaResult arena_init(size_t size);
 void arena_destroy(Arena *arena);
 
 ArenaPointer arena_alloc(Arena *arena, size_t size, size_t alignment);
diff --git a/src/arena.c b/src/arena.c
index 063e97d..ab7a690 100644
--- a/src/arena.c
+++ b/src/arena.c
@@ -2,11 +2,13 @@
 #include <stdbool.h>
 #include <stdlib.h>
 
-ArenaResult arena_init(void *buffer, size_t size) {
+ArenaResult arena_init(size_t size) {
+
+    void *buffer = malloc(size);
     if (buffer == NULL) {
         ArenaResult err = {
             .is_valid = false,
-            .err = ARENA_NULL_ARG,
+            .err = ARENA_BAD_ALLOC,
         };
         return err;
     }
@@ -24,7 +26,6 @@ ArenaResult arena_init(void *buffer, size_t size) {
         .size = size,
         .offset = 0,
     };
-
     ArenaResult val = {
         .is_valid = true,
         .arena = new_arena,
@@ -32,3 +33,13 @@ ArenaResult arena_init(void *buffer, size_t size) {
 
     return val;
 }
+
+void arena_destroy(Arena *arena) {
+    if (arena == NULL) {
+        return;
+    }
+
+    arena->offset = 0;
+    arena->size = 0;
+    free(arena->data);
+}