diff --git a/freelist/freelist.h b/freelist/freelist.h
index f0e8ed4..72a6d84 100644
--- a/freelist/freelist.h
+++ b/freelist/freelist.h
@@ -18,9 +18,6 @@ static inline size_t align_up(size_t n) {
 #define ALIGN(x) (align_up(x))
 #endif // FREELIST_NOALIGN
 
-#define FL_FREE ((uint8_t)0x00)
-#define FL_USED ((uint8_t)0x01)
-
 typedef struct FreeListBlock {
     struct FreeListBlock *next;
 } FreeListBlock;