diff --git a/src/libs/utils/pathlisteditor.cpp b/src/libs/utils/pathlisteditor.cpp
index 440be8fdfc3..bdafb43edc3 100644
--- a/src/libs/utils/pathlisteditor.cpp
+++ b/src/libs/utils/pathlisteditor.cpp
@@ -33,7 +33,6 @@
 #include <QTextBlock>
 #include <QMenu>
 
-#include <QSignalMapper>
 #include <QMimeData>
 #include <QSharedPointer>
 #include <QDebug>
diff --git a/src/plugins/macros/actionmacrohandler.cpp b/src/plugins/macros/actionmacrohandler.cpp
index be14cc6fabf..83f7a09b890 100644
--- a/src/plugins/macros/actionmacrohandler.cpp
+++ b/src/plugins/macros/actionmacrohandler.cpp
@@ -38,7 +38,6 @@
 
 #include <QAction>
 #include <QEvent>
-#include <QSignalMapper>
 
 using namespace Core;
 
diff --git a/src/plugins/macros/macromanager.cpp b/src/plugins/macros/macromanager.cpp
index ac2f23f3c27..fb758cc025c 100644
--- a/src/plugins/macros/macromanager.cpp
+++ b/src/plugins/macros/macromanager.cpp
@@ -51,7 +51,6 @@
 #include <QFile>
 #include <QFileInfo>
 #include <QSettings>
-#include <QSignalMapper>
 #include <QList>
 
 #include <QAction>
diff --git a/src/plugins/qmljseditor/qmljseditor.cpp b/src/plugins/qmljseditor/qmljseditor.cpp
index 232bbd2b25a..5e979a8a3e1 100644
--- a/src/plugins/qmljseditor/qmljseditor.cpp
+++ b/src/plugins/qmljseditor/qmljseditor.cpp
@@ -81,7 +81,6 @@
 #include <QMetaMethod>
 #include <QPointer>
 #include <QScopedPointer>
-#include <QSignalMapper>
 #include <QTextCodec>
 #include <QTimer>
 #include <QTreeView>
diff --git a/src/plugins/vcsbase/vcsbaseclient.cpp b/src/plugins/vcsbase/vcsbaseclient.cpp
index 2a0b8f87f1c..03b3c34b0e4 100644
--- a/src/plugins/vcsbase/vcsbaseclient.cpp
+++ b/src/plugins/vcsbase/vcsbaseclient.cpp
@@ -43,7 +43,6 @@
 #include <QStringList>
 #include <QDir>
 #include <QProcess>
-#include <QSignalMapper>
 #include <QTextCodec>
 #include <QDebug>
 #include <QFileInfo>