diff --git a/include/libmalloc/buddy_alloc.h b/include/libmalloc/buddy_alloc.h
index c913b78..34fe2d4 100644
--- a/include/libmalloc/buddy_alloc.h
+++ b/include/libmalloc/buddy_alloc.h
@@ -45,9 +45,9 @@ unsigned long buddy_map_size(const memory_map_t *map, unsigned long block_size);
 
 unsigned long buddy_reserve(buddy_descriptor_t *heap, unsigned long size);
 
-void buddy_free(buddy_descriptor_t *heap, unsigned long location);
+unsigned long buddy_free(buddy_descriptor_t *heap, unsigned long location);
 
-void buddy_free_size(buddy_descriptor_t *heap, unsigned long size, 
+unsigned long buddy_free_size(buddy_descriptor_t *heap, unsigned long size, 
     unsigned long location);
 
 int buddy_alloc_init(buddy_descriptor_t *heap, memory_map_t *map);
diff --git a/src/buddy_alloc.c b/src/buddy_alloc.c
index b617e64..abde7d0 100644
--- a/src/buddy_alloc.c
+++ b/src/buddy_alloc.c
@@ -83,19 +83,21 @@ unsigned long buddy_reserve(buddy_descriptor_t *heap, unsigned long size)
     return NOMEM;
 }
 
-void buddy_free(buddy_descriptor_t *heap, unsigned long location)
+unsigned long buddy_free(buddy_descriptor_t *heap, unsigned long location)
 {
     unsigned long index = (location - (unsigned long)heap->offset) / heap->block_size;
     unsigned long k = llog2((heap->block_size * (1UL << heap->block_map[index].kval)) / heap->block_size);
     insert_block(heap, index, k);
+    return (1UL << k) * heap->block_size;
 }
 
-void buddy_free_size(buddy_descriptor_t *heap, unsigned long location,
+unsigned long buddy_free_size(buddy_descriptor_t *heap, unsigned long location,
     unsigned long size)
 {
     unsigned long index = (location - (unsigned long)heap->offset) / heap->block_size;
     unsigned long k = llog2(size / heap->block_size);
     insert_block(heap, index, k);
+    return (1UL << k) * heap->block_size;
 }
 
 int buddy_alloc_init(buddy_descriptor_t *heap, memory_map_t *map)