diff --git a/core/Tron.proto b/core/Tron.proto
index 30c16b7b568..d9800a4f710 100644
--- a/core/Tron.proto
+++ b/core/Tron.proto
@@ -187,21 +187,21 @@ message DynamicProperties {
 }
 
 enum ReasonCode {
-  REQUESTED = 0;
-  TCP_ERROR = 1;
-  BAD_PROTOCOL = 2;
-  USELESS_PEER = 3;
-  TOO_MANY_PEERS = 4;
-  DUPLICATE_PEER = 5;
-  INCOMPATIBLE_PROTOCOL = 6;
-  NULL_IDENTITY = 7;
-  PEER_QUITING = 8;
-  UNEXPECTED_IDENTITY = 9;
-  LOCAL_IDENTITY = 10;
-  PING_TIMEOUT = 11;
-  USER_REASON = 12;
-  RESET = 16;
-  UNKNOWN = 255;
+  REQUESTED = 0x00;
+  TCP_ERROR = 0x01;
+  BAD_PROTOCOL = 0x02;
+  USELESS_PEER = 0x03;
+  TOO_MANY_PEERS = 0x04;
+  DUPLICATE_PEER = 0x05;
+  INCOMPATIBLE_PROTOCOL = 0x06;
+  NULL_IDENTITY = 0x07;
+  PEER_QUITING = 0x08;
+  UNEXPECTED_IDENTITY = 0x09;
+  LOCAL_IDENTITY = 0x0A;
+  PING_TIMEOUT = 0x0B;
+  USER_REASON = 0x10;
+  RESET = 0x11;
+  UNKNOWN = 0xFF;
 }
 
 message DisconnectMessage {