diff --git a/src/protocol.cpp b/src/protocol.cpp
index fc03795959..dd8da8716a 100644
--- a/src/protocol.cpp
+++ b/src/protocol.cpp
@@ -334,7 +334,6 @@ static std::string serviceFlagToStr(size_t bit)
     case NODE_NETWORK:         return "NETWORK";
     case NODE_GETUTXO:         return "GETUTXO";
     case NODE_BLOOM:           return "BLOOM";
-    case NODE_XTHIN:           return "XTHIN";
     case NODE_COMPACT_FILTERS: return "COMPACT_FILTERS";
     case NODE_NETWORK_LIMITED: return "NETWORK_LIMITED";
     // Not using default, so we get warned when a case is missing
diff --git a/src/protocol.h b/src/protocol.h
index 7bf1e5011d..ca6ac5c7f6 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -1,5 +1,5 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2015 The Bitcoin Core developers
+// Copyright (c) 2009-2019 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -314,9 +314,6 @@ enum ServiceFlags : uint64_t {
     // Dash Core nodes used to support this by default, without advertising this bit,
     // but no longer do as of protocol version 70201 (= NO_BLOOM_VERSION)
     NODE_BLOOM = (1 << 2),
-    // NODE_XTHIN means the node supports Xtreme Thinblocks
-    // If this is turned off then the node will not service nor make xthin requests
-    NODE_XTHIN = (1 << 4),
     // NODE_COMPACT_FILTERS means the node will service basic block filter requests.
     // See BIP157 and BIP158 for details on how this is implemented.
     NODE_COMPACT_FILTERS = (1 << 6),
diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
index bd0407bbb3..b212acef9e 100644
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -15,10 +15,10 @@
 
 #include <base58.h>
 #include <chainparams.h>
-#include <primitives/transaction.h>
 #include <interfaces/node.h>
 #include <key_io.h>
 #include <policy/policy.h>
+#include <primitives/transaction.h>
 #include <protocol.h>
 #include <script/script.h>
 #include <script/standard.h>