diff --git a/src/zcash/address/zip32.cpp b/src/zcash/address/zip32.cpp
index e1b0480b6..c804c5aba 100644
--- a/src/zcash/address/zip32.cpp
+++ b/src/zcash/address/zip32.cpp
@@ -19,7 +19,7 @@ const unsigned char ZCASH_HD_SEED_FP_PERSONAL[BLAKE2bPersonalBytes] =
 const unsigned char ZCASH_TADDR_OVK_PERSONAL[BLAKE2bPersonalBytes] =
     {'Z', 'c', 'T', 'a', 'd', 'd', 'r', 'T', 'o', 'S', 'a', 'p', 'l', 'i', 'n', 'g'};
 
-const libzcash::diversifier_index_t MAX_TRANSPARENT_CHILD_IDX(0x40000000);
+const libzcash::diversifier_index_t MAX_TRANSPARENT_CHILD_IDX(0x7FFFFFFF);
 
 MnemonicSeed MnemonicSeed::Random(uint32_t bip44CoinType, Language language, size_t entropyLen)
 {