diff --git a/src/libs/extensionsystem/pluginmanager.cpp b/src/libs/extensionsystem/pluginmanager.cpp
index 6998e7bbc48..ad1109ff0f0 100644
--- a/src/libs/extensionsystem/pluginmanager.cpp
+++ b/src/libs/extensionsystem/pluginmanager.cpp
@@ -361,7 +361,7 @@ QReadWriteLock *PluginManager::listLock()
 */
 void PluginManager::loadPlugins()
 {
-    return d->loadPlugins();
+    d->loadPlugins();
 }
 
 /*!
diff --git a/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp b/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
index e914bdcbc94..4c4db4c116d 100644
--- a/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
+++ b/src/libs/qmleditorwidgets/contextpanewidgetimage.cpp
@@ -703,8 +703,10 @@ static inline bool rangeCheck(int target, int pos)
 
 void PreviewLabel::mousePressEvent(QMouseEvent * event)
 {
-    if (!m_borderImage)
-        return QLabel::mouseMoveEvent(event);
+    if (!m_borderImage) {
+        QLabel::mouseMoveEvent(event);
+        return;
+    }
 
     bool bottom = false;
 
@@ -790,8 +792,10 @@ static inline int limitPositive(int i)
 
 void PreviewLabel::mouseMoveEvent(QMouseEvent * event)
 {
-    if (!m_borderImage)
-        return QLabel::mouseMoveEvent(event);
+    if (!m_borderImage) {
+        QLabel::mouseMoveEvent(event);
+        return;
+    }
 
     QPoint p = event->pos();
     bool bottom = false;
diff --git a/src/libs/qmljs/parser/qmljsast_p.h b/src/libs/qmljs/parser/qmljsast_p.h
index a05a363496d..ae6f2c9b948 100644
--- a/src/libs/qmljs/parser/qmljsast_p.h
+++ b/src/libs/qmljs/parser/qmljsast_p.h
@@ -223,7 +223,7 @@ public:
     static void accept(Node *node, Visitor *visitor);
 
     inline static void acceptChild(Node *node, Visitor *visitor)
-    { return accept(node, visitor); } // ### remove
+    { accept(node, visitor); } // ### remove
 
     virtual void accept0(Visitor *visitor) = 0;
     virtual SourceLocation firstSourceLocation() const = 0;
diff --git a/src/libs/utils/completinglineedit.cpp b/src/libs/utils/completinglineedit.cpp
index 52d2c5d7f19..5ae7448288a 100644
--- a/src/libs/utils/completinglineedit.cpp
+++ b/src/libs/utils/completinglineedit.cpp
@@ -62,7 +62,7 @@ void CompletingLineEdit::keyPressEvent(QKeyEvent *e)
                 comp->complete();
         }
     }
-    return QLineEdit::keyPressEvent(e);
+    QLineEdit::keyPressEvent(e);
 }
 
 } // namespace Utils
diff --git a/src/libs/utils/consoleprocess_unix.cpp b/src/libs/utils/consoleprocess_unix.cpp
index 192f3409407..bd307589330 100644
--- a/src/libs/utils/consoleprocess_unix.cpp
+++ b/src/libs/utils/consoleprocess_unix.cpp
@@ -407,7 +407,7 @@ QString ConsoleProcess::terminalEmulator(const QSettings *settings, bool nonEmpt
 
 void ConsoleProcess::setTerminalEmulator(QSettings *settings, const QString &term)
 {
-    return settings->setValue(QLatin1String("General/TerminalEmulator"), term);
+    settings->setValue(QLatin1String("General/TerminalEmulator"), term);
 }
 
 bool ConsoleProcess::startTerminalEmulator(QSettings *settings, const QString &workingDir)
diff --git a/src/libs/utils/unixutils.cpp b/src/libs/utils/unixutils.cpp
index f08ee196c89..7db05c22eaf 100644
--- a/src/libs/utils/unixutils.cpp
+++ b/src/libs/utils/unixutils.cpp
@@ -47,7 +47,7 @@ QString UnixUtils::fileBrowser(const QSettings *settings)
 
 void UnixUtils::setFileBrowser(QSettings *settings, const QString &term)
 {
-    return settings->setValue(QLatin1String("General/FileBrowser"), term);
+    settings->setValue(QLatin1String("General/FileBrowser"), term);
 }
 
 
diff --git a/src/plugins/coreplugin/manhattanstyle.cpp b/src/plugins/coreplugin/manhattanstyle.cpp
index 375d38afb5c..4a68fa41106 100644
--- a/src/plugins/coreplugin/manhattanstyle.cpp
+++ b/src/plugins/coreplugin/manhattanstyle.cpp
@@ -231,12 +231,12 @@ QPalette ManhattanStyle::standardPalette() const
 
 void ManhattanStyle::polish(QApplication *app)
 {
-    return QProxyStyle::polish(app);
+    QProxyStyle::polish(app);
 }
 
 void ManhattanStyle::unpolish(QApplication *app)
 {
-    return QProxyStyle::unpolish(app);
+    QProxyStyle::unpolish(app);
 }
 
 QPalette panelPalette(const QPalette &oldPalette, bool lightColored = false)
@@ -381,8 +381,10 @@ int ManhattanStyle::styleHint(StyleHint hint, const QStyleOption *option, const
 void ManhattanStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option,
                                    QPainter *painter, const QWidget *widget) const
 {
-    if (!panelWidget(widget))
-        return QProxyStyle::drawPrimitive(element, option, painter, widget);
+    if (!panelWidget(widget)) {
+        QProxyStyle::drawPrimitive(element, option, painter, widget);
+        return;
+    }
 
     bool animating = (option->state & State_Animating);
     int state = option->state;
@@ -614,8 +616,10 @@ void ManhattanStyle::drawPrimitive(PrimitiveElement element, const QStyleOption
 void ManhattanStyle::drawControl(ControlElement element, const QStyleOption *option,
                                  QPainter *painter, const QWidget *widget) const
 {
-    if (!panelWidget(widget) && !qobject_cast<const QMenu *>(widget))
-        return QProxyStyle::drawControl(element, option, painter, widget);
+    if (!panelWidget(widget) && !qobject_cast<const QMenu *>(widget)) {
+        QProxyStyle::drawControl(element, option, painter, widget);
+        return;
+    }
 
     switch (element) {
     case CE_MenuItem:
diff --git a/src/plugins/coreplugin/statusbarmanager.cpp b/src/plugins/coreplugin/statusbarmanager.cpp
index 33eaf62d719..cae5177f19e 100644
--- a/src/plugins/coreplugin/statusbarmanager.cpp
+++ b/src/plugins/coreplugin/statusbarmanager.cpp
@@ -157,5 +157,5 @@ void NonResizingSplitter::resizeEvent(QResizeEvent *ev)
     int leftSplitWidth = qMin(sizes().at(0), ev->size().width());
     int rightSplitWidth = qMax(0, ev->size().width() - leftSplitWidth);
     setSizes(QList<int>() << leftSplitWidth << rightSplitWidth);
-    return QWidget::resizeEvent(ev);
+    QWidget::resizeEvent(ev);
 }
diff --git a/src/plugins/projectexplorer/processstep.cpp b/src/plugins/projectexplorer/processstep.cpp
index 9b95a0870c1..0d5334c0e6e 100644
--- a/src/plugins/projectexplorer/processstep.cpp
+++ b/src/plugins/projectexplorer/processstep.cpp
@@ -86,7 +86,7 @@ bool ProcessStep::init(QList<const BuildStep *> &earlierSteps)
 
 void ProcessStep::run(QFutureInterface<bool> & fi)
 {
-    return AbstractProcessStep::run(fi);
+    AbstractProcessStep::run(fi);
 }
 
 BuildStepConfigWidget *ProcessStep::createConfigWidget()
diff --git a/src/plugins/texteditor/textdocumentlayout.cpp b/src/plugins/texteditor/textdocumentlayout.cpp
index f413b5c363a..df6a82495d7 100644
--- a/src/plugins/texteditor/textdocumentlayout.cpp
+++ b/src/plugins/texteditor/textdocumentlayout.cpp
@@ -527,7 +527,7 @@ void TextDocumentLayout::setFolded(const QTextBlock &block, bool folded)
     if (folded)
         userData(block)->setFolded(true);
     else if (TextBlockUserData *userData = testUserData(block))
-        return userData->setFolded(false);
+        userData->setFolded(false);
 }
 
 void TextDocumentLayout::requestExtraAreaUpdate()