diff --git a/src/net.cpp b/src/net.cpp
index bd837eaa1a1..4759287c36c 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -35,6 +35,7 @@
 
 #include <algorithm>
 #include <cstdint>
+#include <functional>
 #include <unordered_map>
 
 #include <math.h>
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index a367f91cc3f..ccc0a6828c9 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -30,6 +30,7 @@
 #include <qt/macdockiconhandler.h>
 #endif
 
+#include <functional>
 #include <chain.h>
 #include <chainparams.h>
 #include <interfaces/handler.h>
diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index a2f46c339b8..56813b2d192 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -19,6 +19,7 @@
 #include <validation.h>
 
 #include <stdint.h>
+#include <functional>
 
 #include <QDebug>
 #include <QThread>
diff --git a/src/qt/splashscreen.cpp b/src/qt/splashscreen.cpp
index 5796a6ef56b..2292c01d6a4 100644
--- a/src/qt/splashscreen.cpp
+++ b/src/qt/splashscreen.cpp
@@ -18,6 +18,8 @@
 #include <util/system.h>
 #include <util/translation.h>
 
+#include <functional>
+
 #include <QApplication>
 #include <QCloseEvent>
 #include <QPainter>
diff --git a/src/qt/transactiontablemodel.cpp b/src/qt/transactiontablemodel.cpp
index 05b250eea92..e6d483364c6 100644
--- a/src/qt/transactiontablemodel.cpp
+++ b/src/qt/transactiontablemodel.cpp
@@ -19,6 +19,7 @@
 #include <uint256.h>
 
 #include <algorithm>
+#include <functional>
 
 #include <QColor>
 #include <QDateTime>
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
index c99f861ccbf..58427b42cc5 100644
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -29,6 +29,7 @@
 #include <wallet/wallet.h> // for CRecipient
 
 #include <stdint.h>
+#include <functional>
 
 #include <QDebug>
 #include <QMessageBox>
diff --git a/src/scheduler.cpp b/src/scheduler.cpp
index 7c361bf26f9..b3ee23f1397 100644
--- a/src/scheduler.cpp
+++ b/src/scheduler.cpp
@@ -7,6 +7,7 @@
 #include <random.h>
 
 #include <assert.h>
+#include <functional>
 #include <utility>
 
 CScheduler::CScheduler()
diff --git a/src/test/scheduler_tests.cpp b/src/test/scheduler_tests.cpp
index 2e5a7549b78..21162356b81 100644
--- a/src/test/scheduler_tests.cpp
+++ b/src/test/scheduler_tests.cpp
@@ -9,6 +9,7 @@
 #include <boost/test/unit_test.hpp>
 #include <boost/thread/thread.hpp>
 
+#include <functional>
 #include <mutex>
 
 BOOST_AUTO_TEST_SUITE(scheduler_tests)
diff --git a/src/test/transaction_tests.cpp b/src/test/transaction_tests.cpp
index 3d06568be1f..1eb30c68d65 100644
--- a/src/test/transaction_tests.cpp
+++ b/src/test/transaction_tests.cpp
@@ -24,6 +24,7 @@
 #include <util/strencodings.h>
 #include <validation.h>
 
+#include <functional>
 #include <map>
 #include <string>
 
diff --git a/src/torcontrol.cpp b/src/torcontrol.cpp
index 90ee9422ba3..908ad35e1bc 100644
--- a/src/torcontrol.cpp
+++ b/src/torcontrol.cpp
@@ -15,10 +15,11 @@
 #include <util/strencodings.h>
 #include <util/system.h>
 
-#include <vector>
 #include <deque>
+#include <functional>
 #include <set>
 #include <stdlib.h>
+#include <vector>
 
 #include <boost/signals2/signal.hpp>
 #include <boost/algorithm/string/split.hpp>