diff --git a/axl_memory.c b/axl_memory.c
index 24b5f4d..91d6eb5 100644
--- a/axl_memory.c
+++ b/axl_memory.c
@@ -83,7 +83,7 @@ mb_header* axl_find_mb(u32 req_size)
 
 void axl_split_mb(mb_header* block, u32 size)
 {
-    if(block->size > size + MB_HEADER_SIZE)
+    if(block->size > size + MB_HEADER_SIZE * 2)
     {
         mb_header* new_block = (mb_header*)((u8*)block + MB_HEADER_SIZE + size);
         new_block->size = block->size - size - MB_HEADER_SIZE;