diff --git a/include/picotls.h b/include/picotls.h
index 6628cf1..a25346a 100644
--- a/include/picotls.h
+++ b/include/picotls.h
@@ -237,8 +237,6 @@
             0xfb, 0xd5, 0x1a, 0xd2, 0xf1, 0x48, 0x98, 0xb9, 0x5b                                                                   \
     }
 
-#define PTLS_QUICINT_MAX 4611686018427387903 // (1 << 62) - 1
-
 typedef struct st_ptls_t ptls_t;
 typedef struct st_ptls_context_t ptls_context_t;
 typedef struct st_ptls_key_schedule_t ptls_key_schedule_t;
@@ -949,6 +947,9 @@
 static uint8_t *ptls_encode_quicint(uint8_t *p, uint64_t v);
 #define PTLS_ENCODE_QUICINT_CAPACITY 8
 
+#define PTLS_QUICINT_MAX 4611686018427387903 // (1 << 62) - 1
+#define PTLS_QUICINT_LONGEST_STR "4611686018427387903"
+
 #define ptls_buffer_pushv(buf, src, len)                                                                                           \
     do {                                                                                                                           \
         if ((ret = ptls_buffer__do_pushv((buf), (src), (len))) != 0)                                                               \