diff --git a/src/plugins/help/helpplugin.cpp b/src/plugins/help/helpplugin.cpp
index 4b471119ecd..2af6e437e1e 100644
--- a/src/plugins/help/helpplugin.cpp
+++ b/src/plugins/help/helpplugin.cpp
@@ -925,7 +925,7 @@ void HelpPlugin::activateContext()
             QUrl source = *links.begin();
             const QLatin1String qtRefDoc = QLatin1String("com.trolltech.qt");
 
-            // workaround to show the latest qt version
+            // workaround to show the latest Qt version
             foreach (const QUrl &tmp, links) {
                 const QString &authority = tmp.authority();
                 if (authority.startsWith(qtRefDoc)) {
diff --git a/src/plugins/madde/maemoqemumanager.cpp b/src/plugins/madde/maemoqemumanager.cpp
index 36300472bf5..6140ee761bd 100644
--- a/src/plugins/madde/maemoqemumanager.cpp
+++ b/src/plugins/madde/maemoqemumanager.cpp
@@ -102,7 +102,7 @@ MaemoQemuManager::MaemoQemuManager(QObject *parent)
     m_qemuAction->setEnabled(false);
     m_qemuAction->setVisible(false);
 
-    // listen to qt version changes to update the start button
+    // listen to Qt version changes to update the start button
     connect(QtSupport::QtVersionManager::instance(), SIGNAL(qtVersionsChanged(QList<int>,QList<int>,QList<int>)),
         this, SLOT(qtVersionsChanged(QList<int>,QList<int>,QList<int>)));
 
@@ -195,7 +195,7 @@ void MaemoQemuManager::qtVersionsChanged(const QList<int> &added, const QList<in
                 }
             }
         } else {
-            // this qt version has been removed from the settings
+            // this Qt version has been removed from the settings
             m_runtimes.remove(uniqueId);
             if (uniqueId == m_runningQtId) {
                 terminateRuntime();
@@ -249,7 +249,7 @@ void MaemoQemuManager::targetAdded(ProjectExplorer::Target *target)
     if (!target || !MaemoGlobal::hasMaemoDevice(target->profile()))
         return;
 
-    // handle the qt version changes the build configuration uses
+    // handle the Qt version changes the build configuration uses
     connect(target, SIGNAL(environmentChanged()), this, SLOT(environmentChanged()));
     connect(target, SIGNAL(profileChanged()), this, SLOT(systemChanged()));
 
@@ -283,7 +283,7 @@ void MaemoQemuManager::systemChanged()
 
 void MaemoQemuManager::environmentChanged()
 {
-    // likely to happen when the qt version changes the build config is using
+    // likely to happen when the Qt version changes the build config is using
     if (ProjectExplorerPlugin *explorer = ProjectExplorerPlugin::instance()) {
         if (Project *project = explorer->session()->startupProject())
             toggleStarterButton(project->activeTarget());
diff --git a/src/plugins/madde/maemoqemumanager.h b/src/plugins/madde/maemoqemumanager.h
index a1eaf5db27a..01c620ac143 100644
--- a/src/plugins/madde/maemoqemumanager.h
+++ b/src/plugins/madde/maemoqemumanager.h
@@ -83,7 +83,7 @@ private slots:
     void targetChanged(ProjectExplorer::Target *target);
     void systemChanged();
 
-    void environmentChanged();  // needed to check for qt version
+    void environmentChanged();  // needed to check for Qt version
     void deviceConfigurationChanged(ProjectExplorer::Target *target);
 
     void terminateRuntime();
diff --git a/src/plugins/qt4projectmanager/makestep.cpp b/src/plugins/qt4projectmanager/makestep.cpp
index 5105a6130bf..847c80628d3 100644
--- a/src/plugins/qt4projectmanager/makestep.cpp
+++ b/src/plugins/qt4projectmanager/makestep.cpp
@@ -153,7 +153,7 @@ bool MakeStep::init()
 
     ToolChain *tc = ToolChainProfileInformation::toolChain(target()->profile());
     if (!tc) {
-        m_tasks.append(Task(Task::Error, tr("Qt Creator needs a tool chain set up to build. Configure a tool chain the profile options."),
+        m_tasks.append(Task(Task::Error, tr("Qt Creator needs a tool chain set up to build. Configure a tool chain the target options."),
                                              Utils::FileName(), -1,
                                              Core::Id(ProjectExplorer::Constants::TASK_CATEGORY_BUILDSYSTEM)));
         return false;
@@ -418,7 +418,7 @@ void MakeStepConfigWidget::updateDetails()
         m_ui->makeLabel->setText(tr("Make:"));
 
     if (!tc) {
-        setSummaryText(tr("<b>Make:</b> No tool chain set in profile."));
+        setSummaryText(tr("<b>Make:</b> No tool chain set in target."));
         return;
     }
     Qt4BuildConfiguration *bc = m_makeStep->qt4BuildConfiguration();
diff --git a/src/plugins/qt4projectmanager/qt4buildconfiguration.cpp b/src/plugins/qt4projectmanager/qt4buildconfiguration.cpp
index 20966cd3ab3..e89bba2ab7c 100644
--- a/src/plugins/qt4projectmanager/qt4buildconfiguration.cpp
+++ b/src/plugins/qt4projectmanager/qt4buildconfiguration.cpp
@@ -151,7 +151,7 @@ void Qt4BuildConfiguration::profileChanged()
 
 void Qt4BuildConfiguration::emitBuildDirectoryChanged()
 {
-    // We also emit buildDirectoryChanged if the the qt version's supportShadowBuild changed
+    // We also emit buildDirectoryChanged if the the Qt version's supportShadowBuild changed
     if (buildDirectory() != m_lastEmmitedBuildDirectory
             || supportsShadowBuilds() != m_qtVersionSupportsShadowBuilds) {
         m_lastEmmitedBuildDirectory = buildDirectory();
@@ -442,7 +442,7 @@ Qt4BuildConfiguration::MakefileState Qt4BuildConfiguration::compareToImportFrom(
             }
         } else {
             if (debug)
-                qDebug()<<"diffrent qt versions, buildconfiguration:"<<version->qmakeCommand().toString()<<" Makefile:"<<qmakePath.toString();
+                qDebug() << "different Qt versions, buildconfiguration:" << version->qmakeCommand().toString() << " Makefile:"<< qmakePath.toString();
             return MakefileForWrongProject;
         }
     }
diff --git a/src/plugins/qt4projectmanager/qt4buildconfiguration.h b/src/plugins/qt4projectmanager/qt4buildconfiguration.h
index 06e6a106e86..92cddb898f5 100644
--- a/src/plugins/qt4projectmanager/qt4buildconfiguration.h
+++ b/src/plugins/qt4projectmanager/qt4buildconfiguration.h
@@ -123,14 +123,14 @@ public:
                                         QString additionalArguments,
                                         QString directory,
                                         bool importing);
-    /// returns whether the qt version in the profile supports shadow building (also true for no qt version)
+    /// returns whether the Qt version in the profile supports shadow building (also true for no Qt version)
     bool supportsShadowBuilds();
 
 public slots:
     void emitEvaluateBuildSystem();
 
 signals:
-    /// emitted for setQMakeBuildConfig, not emitted for qt version changes, even
+    /// emitted for setQMakeBuildConfig, not emitted for Qt version changes, even
     /// if those change the qmakebuildconfig
     void qmakeBuildConfigurationChanged();
     /// emitted when smart installer property of S60 create package step changes
diff --git a/src/plugins/qt4projectmanager/qt4projectconfigwidget.cpp b/src/plugins/qt4projectmanager/qt4projectconfigwidget.cpp
index c7fb94a4583..4369a1b9e86 100644
--- a/src/plugins/qt4projectmanager/qt4projectconfigwidget.cpp
+++ b/src/plugins/qt4projectmanager/qt4projectconfigwidget.cpp
@@ -111,7 +111,7 @@ Qt4ProjectConfigWidget::~Qt4ProjectConfigWidget()
 void Qt4ProjectConfigWidget::updateDetails()
 {
     m_detailsContainer->setSummaryText(
-                tr("building in <b>%3</b>")
+                tr("building in <b>%1</b>")
                 .arg(QDir::toNativeSeparators(m_buildConfiguration->buildDirectory())));
 }
 
@@ -245,7 +245,7 @@ void Qt4ProjectConfigWidget::updateProblemLabel()
 
     QString shadowBuildWarning;
     if (!version->supportsShadowBuilds() && m_buildConfiguration->shadowBuild()) {
-        shadowBuildWarning =tr("The qt version %1 does not support shadow builds, building might fail.")
+        shadowBuildWarning =tr("The Qt version %1 does not support shadow builds, building might fail.")
                 .arg(version->displayName())
                 + QLatin1String("<br>");
     }
diff --git a/src/plugins/qtsupport/baseqtversion.h b/src/plugins/qtsupport/baseqtversion.h
index 5b4461811c3..8051e6d147b 100644
--- a/src/plugins/qtsupport/baseqtversion.h
+++ b/src/plugins/qtsupport/baseqtversion.h
@@ -245,7 +245,7 @@ private:
     QString findQtBinary(Binaries binary) const;
     void updateMkspec() const;
     void setId(int id); // used by the qtversionmanager for legacy restore
-                        // and by the qtoptionspage to replace qt versions
+                        // and by the qtoptionspage to replace Qt versions
     QString m_displayName;
     int m_id;
     bool m_isAutodetected;
diff --git a/src/plugins/qtsupport/exampleslistmodel.cpp b/src/plugins/qtsupport/exampleslistmodel.cpp
index 75b424fe222..8fec6169642 100644
--- a/src/plugins/qtsupport/exampleslistmodel.cpp
+++ b/src/plugins/qtsupport/exampleslistmodel.cpp
@@ -326,7 +326,7 @@ QStringList ExamplesListModel::exampleSources(QString *examplesFallback, QString
         return sources;
 
     // try to find a suitable Qt version
-    m_updateOnQtVersionsChanged = true; // this must be updated when the qt versions change
+    m_updateOnQtVersionsChanged = true; // this must be updated when the Qt versions change
     // fallbacks are passed back if no example manifest is found
     // and we fallback to Qt Creator's shipped manifest (e.g. only old Qt Versions found)
     QString potentialExamplesFallback;
diff --git a/src/plugins/qtsupport/qtoptionspage.cpp b/src/plugins/qtsupport/qtoptionspage.cpp
index 803de478cb6..f0c0ab580d4 100644
--- a/src/plugins/qtsupport/qtoptionspage.cpp
+++ b/src/plugins/qtsupport/qtoptionspage.cpp
@@ -700,7 +700,7 @@ void QtOptionsPageWidget::editPath()
     if (current->type() != version->type()) {
         // not the same type, error out
         QMessageBox::critical(this, tr("Qt versions incompatible"),
-                              tr("The qt version selected must be for the same target."),
+                              tr("The Qt version selected must be for the same target."),
                               QMessageBox::Ok);
         delete version;
         return;
@@ -911,7 +911,7 @@ void QtOptionsPageWidget::updateDebuggingHelperUi()
     }
 }
 
-// To be called if a qt version was removed or added
+// To be called if a Qt version was removed or added
 void QtOptionsPageWidget::updateCleanUpButton()
 {
     bool hasInvalidVersion = false;
@@ -1057,7 +1057,7 @@ void QtOptionsPageWidget::apply()
             this, SLOT(updateQtVersions(QList<int>,QList<int>,QList<int>)));
 }
 
-/* Checks that the qt version name is unique
+/* Checks that the Qt version name is unique
  * and otherwise changes the name
  *
  */
@@ -1115,7 +1115,7 @@ QString QtOptionsPageWidget::searchKeywords() const
 
     // Symbian specific, could be factored out to the factory
     // checking m_configurationWidget is not enough, we want them to be a keyword
-    // regardless of which qt versions configuration widget is currently active
+    // regardless of which Qt versions configuration widget is currently active
     ts << sep << tr("S60 SDK:")
        << sep << tr("SBS v2 directory:");
 
diff --git a/src/plugins/qtsupport/qtversionmanager.cpp b/src/plugins/qtsupport/qtversionmanager.cpp
index 94bcd5b91a3..856d3fa9281 100644
--- a/src/plugins/qtsupport/qtversionmanager.cpp
+++ b/src/plugins/qtsupport/qtversionmanager.cpp
@@ -141,7 +141,7 @@ void QtVersionManager::extensionsInitialized()
     if (!success) {
         // We did neither restore our settings or upgraded
         // in that case figure out if there's a qt in path
-        // and add it to the qt versions
+        // and add it to the Qt versions
         findSystemQt();
     }
 
@@ -288,7 +288,7 @@ void QtVersionManager::updateFromInstaller()
                 qDebug("Warning: Unable to find factory for type '%s'", qPrintable(type));
             continue;
         }
-        // First try to find a existing qt version to update
+        // First try to find a existing Qt version to update
         bool restored = false;
         foreach (BaseQtVersion *v, m_versions) {
             if (v->autodetectionSource() == autoDetectionSource) {