diff --git a/axl_memory.c b/axl_memory.c
index ae0f72e..f0e50fe 100644
--- a/axl_memory.c
+++ b/axl_memory.c
@@ -14,7 +14,7 @@ typedef struct mb_header mb_header;
 
 #define MB_HEADER_SIZE sizeof(mb_header)
 
-static mb_header* root = 0; 
+static mb_header* root = NULL;
 
 void* axl_memset(void* ptr, i8 c, u32 n)
 {