diff --git a/electrum/constants.py b/electrum/constants.py
index 78b677a5a..72296c649 100644
--- a/electrum/constants.py
+++ b/electrum/constants.py
@@ -49,8 +49,8 @@ class BitcoinMainnet(AbstractNet):
 
     TESTNET = False
     WIF_PREFIX = 0x1c
-    ADDRTYPE_P2PKH = 0x55
-    ADDRTYPE_P2SH = 0x7A
+    ADDRTYPE_P2PKH = 0
+    ADDRTYPE_P2SH = 5
     SEGWIT_HRP = "lbc"
     GENESIS = "9c89283ba0f3227f6c03b70216b9f665f0118d5e0fa729cedf4fb34d6a34f463"
     DEFAULT_PORTS = {'t': '50001', 's': '50002'}