diff --git a/libc/upstream-openbsd/arith.h b/libc/upstream-openbsd/arith.h
index c57ce12..b262e4f 100644
--- a/libc/upstream-openbsd/arith.h
+++ b/libc/upstream-openbsd/arith.h
@@ -15,13 +15,9 @@
  */
 
 #define IEEE_8087
-#define Arith_Kind_ASL 1
 
 #if __LP64__
 #define Long int
-#define Intcast (int)(long)
-#define Double_Align
-#define X64_bit_pointers
 #endif
 
 #define INFNAN_CHECK