diff --git a/all.h b/all.h
index 30f9251..14146ce 100644
--- a/all.h
+++ b/all.h
@@ -626,6 +626,7 @@ typedef struct HumanTime {
 global const u64 MAX_u64 = 0xffffffffffffffffull;
 global const i64 MAX_i64 = 9223372036854775807LL;
 global const i64 MIN_i64 = (-9223372036854775807LL - 1);
+global const i32 MAX_i32 = 0x7fffffff;
 global const u32 MAX_u32 = 0xffffffff;
 global const u16 MAX_u16 = 0xffff;
 global const u8  MAX_u8  = 0xff;