diff --git a/defs/bitcoin/namecoin.json b/defs/bitcoin/namecoin.json
index 7933a1704..81543d7cd 100644
--- a/defs/bitcoin/namecoin.json
+++ b/defs/bitcoin/namecoin.json
@@ -12,8 +12,8 @@
   "minfee_kb": 1000,
   "signed_message_header": "Namecoin Signed Message:\n",
   "hash_genesis_block": "000000000062b72c5e2ceb45fbc8587e807c155b0da735e6483dfba2f0a9c770",
-  "xprv_magic": 27106558,
-  "xpub_magic": 27108450,
+  "xprv_magic": 76066276,
+  "xpub_magic": 76067358,
   "xpub_magic_segwit_p2sh": null,
   "xpub_magic_segwit_native": null,
   "bech32_prefix": null,