diff --git a/src/Makefile.am b/src/Makefile.am
index 0ed412295f..0f05439227 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -212,6 +212,7 @@ BITCOIN_CORE_H = \
   util/rbf.h \
   util/threadnames.h \
   util/time.h \
+  util/translation.h \
   util/url.h \
   util/validation.h \
   validation.h \
diff --git a/src/banman.cpp b/src/banman.cpp
index 47d64a8f31..c1f7c6f00c 100644
--- a/src/banman.cpp
+++ b/src/banman.cpp
@@ -9,6 +9,7 @@
 #include <ui_interface.h>
 #include <util/system.h>
 #include <util/time.h>
+#include <util/translation.h>
 
 
 BanMan::BanMan(fs::path ban_file, CClientUIInterface* client_interface, int64_t default_ban_time)
diff --git a/src/bitcoin-cli.cpp b/src/bitcoin-cli.cpp
index d3419520a7..8ca985458d 100644
--- a/src/bitcoin-cli.cpp
+++ b/src/bitcoin-cli.cpp
@@ -13,9 +13,11 @@
 #include <rpc/client.h>
 #include <rpc/protocol.h>
 #include <rpc/request.h>
-#include <util/system.h>
 #include <util/strencodings.h>
+#include <util/system.h>
+#include <util/translation.h>
 
+#include <functional>
 #include <memory>
 #include <stdio.h>
 #include <tuple>
diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
index 4d513deed8..89e2ab305b 100644
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -18,11 +18,13 @@
 #include <script/sign.h>
 #include <script/signingprovider.h>
 #include <univalue.h>
-#include <util/rbf.h>
-#include <util/system.h>
 #include <util/moneystr.h>
+#include <util/rbf.h>
 #include <util/strencodings.h>
+#include <util/system.h>
+#include <util/translation.h>
 
+#include <functional>
 #include <memory>
 #include <stdio.h>
 
diff --git a/src/bitcoin-wallet.cpp b/src/bitcoin-wallet.cpp
index cbb4ea750c..a690e2facb 100644
--- a/src/bitcoin-wallet.cpp
+++ b/src/bitcoin-wallet.cpp
@@ -9,10 +9,12 @@
 #include <chainparams.h>
 #include <chainparamsbase.h>
 #include <logging.h>
-#include <util/system.h>
 #include <util/strencodings.h>
+#include <util/system.h>
+#include <util/translation.h>
 #include <wallet/wallettool.h>
 
+#include <functional>
 #include <stdio.h>
 
 const std::function<std::string(const char*)> G_TRANSLATION_FUN = nullptr;
diff --git a/src/bitcoind.cpp b/src/bitcoind.cpp
index 77367d6bb8..ba021a5163 100644
--- a/src/bitcoind.cpp
+++ b/src/bitcoind.cpp
@@ -19,6 +19,9 @@
 #include <util/strencodings.h>
 #include <util/system.h>
 #include <util/threadnames.h>
+#include <util/translation.h>
+
+#include <functional>
 
 const std::function<std::string(const char*)> G_TRANSLATION_FUN = nullptr;
 
diff --git a/src/httprpc.cpp b/src/httprpc.cpp
index c7a119440b..be39a5ed2e 100644
--- a/src/httprpc.cpp
+++ b/src/httprpc.cpp
@@ -5,19 +5,20 @@
 #include <httprpc.h>
 
 #include <chainparams.h>
+#include <crypto/hmac_sha256.h>
 #include <httpserver.h>
 #include <key_io.h>
 #include <rpc/protocol.h>
 #include <rpc/server.h>
 #include <sync.h>
-#include <util/system.h>
-#include <util/strencodings.h>
 #include <ui_interface.h>
+#include <util/strencodings.h>
+#include <util/system.h>
+#include <util/translation.h>
 #include <walletinitinterface.h>
-#include <crypto/hmac_sha256.h>
-#include <stdio.h>
 
 #include <memory>
+#include <stdio.h>
 
 #include <boost/algorithm/string.hpp> // boost::trim
 
diff --git a/src/index/txindex.cpp b/src/index/txindex.cpp
index 929b85bfb5..fd52590097 100644
--- a/src/index/txindex.cpp
+++ b/src/index/txindex.cpp
@@ -6,6 +6,7 @@
 #include <shutdown.h>
 #include <ui_interface.h>
 #include <util/system.h>
+#include <util/translation.h>
 #include <validation.h>
 
 #include <boost/thread.hpp>
diff --git a/src/init.cpp b/src/init.cpp
index 068b05286c..d5b50b5fc0 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -19,40 +19,42 @@
 #include <compat/sanity.h>
 #include <consensus/validation.h>
 #include <fs.h>
-#include <httpserver.h>
 #include <httprpc.h>
+#include <httpserver.h>
 #include <index/blockfilterindex.h>
-#include <interfaces/chain.h>
 #include <index/txindex.h>
+#include <interfaces/chain.h>
 #include <key.h>
-#include <validation.h>
 #include <miner.h>
-#include <netbase.h>
 #include <net.h>
 #include <net_processing.h>
+#include <netbase.h>
 #include <policy/feerate.h>
 #include <policy/fees.h>
 #include <policy/policy.h>
 #include <policy/settings.h>
-#include <rpc/server.h>
-#include <rpc/register.h>
 #include <rpc/blockchain.h>
+#include <rpc/register.h>
+#include <rpc/server.h>
 #include <rpc/util.h>
-#include <script/standard.h>
-#include <script/sigcache.h>
 #include <scheduler.h>
+#include <script/sigcache.h>
+#include <script/standard.h>
 #include <shutdown.h>
-#include <util/threadnames.h>
 #include <timedata.h>
+#include <torcontrol.h>
 #include <txdb.h>
 #include <txmempool.h>
-#include <torcontrol.h>
 #include <ui_interface.h>
-#include <util/system.h>
 #include <util/moneystr.h>
+#include <util/system.h>
+#include <util/threadnames.h>
+#include <util/translation.h>
 #include <util/validation.h>
+#include <validation.h>
 #include <validationinterface.h>
 #include <walletinitinterface.h>
+
 #include <stdint.h>
 #include <stdio.h>
 
diff --git a/src/net.cpp b/src/net.cpp
index 7d11111b25..7a0bcafbf8 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -15,11 +15,12 @@
 #include <consensus/consensus.h>
 #include <crypto/common.h>
 #include <crypto/sha256.h>
-#include <primitives/transaction.h>
 #include <netbase.h>
+#include <primitives/transaction.h>
 #include <scheduler.h>
 #include <ui_interface.h>
 #include <util/strencodings.h>
+#include <util/translation.h>
 
 #ifdef WIN32
 #include <string.h>
diff --git a/src/qt/main.cpp b/src/qt/main.cpp
index 6a3c2249d1..999c434d23 100644
--- a/src/qt/main.cpp
+++ b/src/qt/main.cpp
@@ -4,6 +4,8 @@
 
 #include <qt/bitcoin.h>
 
+#include <util/translation.h>
+
 #include <QCoreApplication>
 
 #include <functional>
diff --git a/src/qt/splashscreen.cpp b/src/qt/splashscreen.cpp
index 98eeee1a47..b3ea3382dd 100644
--- a/src/qt/splashscreen.cpp
+++ b/src/qt/splashscreen.cpp
@@ -16,6 +16,7 @@
 #include <interfaces/wallet.h>
 #include <ui_interface.h>
 #include <util/system.h>
+#include <util/translation.h>
 #include <version.h>
 
 #include <QApplication>
diff --git a/src/test/setup_common.cpp b/src/test/setup_common.cpp
index 24c7d51898..de877fd167 100644
--- a/src/test/setup_common.cpp
+++ b/src/test/setup_common.cpp
@@ -23,10 +23,13 @@
 #include <util/memory.h>
 #include <util/strencodings.h>
 #include <util/time.h>
+#include <util/translation.h>
 #include <util/validation.h>
 #include <validation.h>
 #include <validationinterface.h>
 
+#include <functional>
+
 const std::function<std::string(const char*)> G_TRANSLATION_FUN = nullptr;
 
 FastRandomContext g_insecure_rand_ctx;
diff --git a/src/timedata.cpp b/src/timedata.cpp
index f4613eeec8..4974ad0a0a 100644
--- a/src/timedata.cpp
+++ b/src/timedata.cpp
@@ -12,6 +12,7 @@
 #include <sync.h>
 #include <ui_interface.h>
 #include <util/system.h>
+#include <util/translation.h>
 #include <warnings.h>
 
 
diff --git a/src/txdb.cpp b/src/txdb.cpp
index 90b92969b9..54b632f1ec 100644
--- a/src/txdb.cpp
+++ b/src/txdb.cpp
@@ -5,12 +5,13 @@
 
 #include <txdb.h>
 
-#include <random.h>
 #include <pow.h>
+#include <random.h>
 #include <shutdown.h>
+#include <ui_interface.h>
 #include <uint256.h>
 #include <util/system.h>
-#include <ui_interface.h>
+#include <util/translation.h>
 
 #include <stdint.h>
 
diff --git a/src/util/error.cpp b/src/util/error.cpp
index 9331a92ad7..1b662d3700 100644
--- a/src/util/error.cpp
+++ b/src/util/error.cpp
@@ -4,7 +4,9 @@
 
 #include <util/error.h>
 
+#include <tinyformat.h>
 #include <util/system.h>
+#include <util/translation.h>
 
 std::string TransactionErrorString(const TransactionError err)
 {
diff --git a/src/util/system.cpp b/src/util/system.cpp
index 72b37b9187..2a069c554f 100644
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -7,6 +7,7 @@
 
 #include <chainparamsbase.h>
 #include <util/strencodings.h>
+#include <util/translation.h>
 
 #include <stdarg.h>
 
diff --git a/src/util/system.h b/src/util/system.h
index dda9156488..66a9eb4612 100644
--- a/src/util/system.h
+++ b/src/util/system.h
@@ -40,18 +40,6 @@ int64_t GetStartupTime();
 
 extern const char * const BITCOIN_CONF_FILENAME;
 
-/** Translate a message to the native language of the user. */
-const extern std::function<std::string(const char*)> G_TRANSLATION_FUN;
-
-/**
- * Translation function.
- * If no translation function is set, simply return the input.
- */
-inline std::string _(const char* psz)
-{
-    return G_TRANSLATION_FUN ? (G_TRANSLATION_FUN)(psz) : psz;
-}
-
 void SetupEnvironment();
 bool SetupNetworking();
 
diff --git a/src/util/translation.h b/src/util/translation.h
new file mode 100644
index 0000000000..d709b26890
--- /dev/null
+++ b/src/util/translation.h
@@ -0,0 +1,20 @@
+// Copyright (c) 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.
+
+#ifndef BITCOIN_UTIL_TRANSLATION_H
+#define BITCOIN_UTIL_TRANSLATION_H
+
+/** Translate a message to the native language of the user. */
+const extern std::function<std::string(const char*)> G_TRANSLATION_FUN;
+
+/**
+ * Translation function.
+ * If no translation function is set, simply return the input.
+ */
+inline std::string _(const char* psz)
+{
+    return G_TRANSLATION_FUN ? (G_TRANSLATION_FUN)(psz) : psz;
+}
+
+#endif // BITCOIN_UTIL_TRANSLATION_H
diff --git a/src/validation.cpp b/src/validation.cpp
index f585bc7d2d..259127ec3f 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -41,6 +41,7 @@
 #include <util/rbf.h>
 #include <util/strencodings.h>
 #include <util/system.h>
+#include <util/translation.h>
 #include <util/validation.h>
 #include <validationinterface.h>
 #include <warnings.h>
diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp
index b5f90deabd..e07ea9887c 100644
--- a/src/wallet/db.cpp
+++ b/src/wallet/db.cpp
@@ -6,6 +6,7 @@
 #include <wallet/db.h>
 
 #include <util/strencodings.h>
+#include <util/translation.h>
 
 #include <stdint.h>
 
diff --git a/src/wallet/init.cpp b/src/wallet/init.cpp
index 4c327c77ae..a86da98d71 100644
--- a/src/wallet/init.cpp
+++ b/src/wallet/init.cpp
@@ -7,11 +7,12 @@
 #include <interfaces/chain.h>
 #include <net.h>
 #include <outputtype.h>
-#include <util/system.h>
 #include <util/moneystr.h>
-#include <walletinitinterface.h>
+#include <util/system.h>
+#include <util/translation.h>
 #include <wallet/wallet.h>
 #include <wallet/walletutil.h>
+#include <walletinitinterface.h>
 
 class WalletInit : public WalletInitInterface {
 public:
diff --git a/src/wallet/load.cpp b/src/wallet/load.cpp
index 54aa12dba8..1e9b166285 100644
--- a/src/wallet/load.cpp
+++ b/src/wallet/load.cpp
@@ -8,6 +8,7 @@
 #include <interfaces/chain.h>
 #include <scheduler.h>
 #include <util/system.h>
+#include <util/translation.h>
 #include <wallet/wallet.h>
 
 bool VerifyWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files)
diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index 7e973194d9..b820efc4d9 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -16,9 +16,9 @@
 #include <util/bip32.h>
 #include <util/system.h>
 #include <util/time.h>
-#include <wallet/wallet.h>
-
+#include <util/translation.h>
 #include <wallet/rpcwallet.h>
+#include <wallet/wallet.h>
 
 #include <stdint.h>
 #include <tuple>
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 452d4f7a6a..4681dc2d44 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -25,6 +25,7 @@
 #include <util/fees.h>
 #include <util/moneystr.h>
 #include <util/rbf.h>
+#include <util/translation.h>
 #include <util/validation.h>
 #include <validation.h>
 #include <wallet/coincontrol.h>
diff --git a/src/warnings.cpp b/src/warnings.cpp
index 5542412a7f..2a81882583 100644
--- a/src/warnings.cpp
+++ b/src/warnings.cpp
@@ -3,9 +3,11 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#include <warnings.h>
+
 #include <sync.h>
 #include <util/system.h>
-#include <warnings.h>
+#include <util/translation.h>
 
 static RecursiveMutex cs_warnings;
 static std::string strMiscWarning GUARDED_BY(cs_warnings);