diff --git a/src/plugins/qmlprofiler/qmlprofilertool.cpp b/src/plugins/qmlprofiler/qmlprofilertool.cpp
index 032ecb40c62..c93b8c4b676 100644
--- a/src/plugins/qmlprofiler/qmlprofilertool.cpp
+++ b/src/plugins/qmlprofiler/qmlprofilertool.cpp
@@ -317,6 +317,7 @@ QWidget *QmlProfilerTool::createControlWidget()
 
     d->m_clearButton = new QToolButton(toolbarWidget);
     d->m_clearButton->setIcon(QIcon(QLatin1String(":/qmlprofiler/clean_pane_small.png")));
+    d->m_clearButton->setToolTip(tr("Discard data"));
     connect(d->m_clearButton,SIGNAL(clicked()), this, SLOT(clearDisplay()));
     layout->addWidget(d->m_clearButton);
 
@@ -391,6 +392,7 @@ void QmlProfilerTool::stopRecording()
 void QmlProfilerTool::setRecording(bool recording)
 {
     d->m_recordingEnabled = recording;
+    d->m_recordButton->setToolTip( d->m_recordingEnabled ? tr("Disable profiling") : tr("Enable profiling"));
     if (recording)
         startRecording();
     else
diff --git a/src/plugins/qmlprofiler/tracewindow.cpp b/src/plugins/qmlprofiler/tracewindow.cpp
index 4e8cce9aeb4..9f7e02c3e2b 100644
--- a/src/plugins/qmlprofiler/tracewindow.cpp
+++ b/src/plugins/qmlprofiler/tracewindow.cpp
@@ -72,18 +72,22 @@ TraceWindow::TraceWindow(QWidget *parent)
     toolBarLayout->setSpacing(0);
     QToolButton *buttonPrev= new QToolButton;
     buttonPrev->setIcon(QIcon(":/qmlprofiler/prev.png"));
+    buttonPrev->setToolTip(tr("Jump to previous event"));
     connect(buttonPrev, SIGNAL(clicked()), this, SIGNAL(jumpToPrev()));
     connect(this, SIGNAL(enableToolbar(bool)), buttonPrev, SLOT(setEnabled(bool)));
     QToolButton *buttonNext= new QToolButton;
     buttonNext->setIcon(QIcon(":/qmlprofiler/next.png"));
+    buttonNext->setToolTip(tr("Jump to next event"));
     connect(buttonNext, SIGNAL(clicked()), this, SIGNAL(jumpToNext()));
     connect(this, SIGNAL(enableToolbar(bool)), buttonNext, SLOT(setEnabled(bool)));
     QToolButton *buttonZoomIn = new QToolButton;
     buttonZoomIn->setIcon(QIcon(":/qmlprofiler/magnifier-plus.png"));
+    buttonZoomIn->setToolTip(tr("Zoom in 10%"));
     connect(buttonZoomIn, SIGNAL(clicked()), this, SIGNAL(zoomIn()));
     connect(this, SIGNAL(enableToolbar(bool)), buttonZoomIn, SLOT(setEnabled(bool)));
     QToolButton *buttonZoomOut = new QToolButton;
     buttonZoomOut->setIcon(QIcon(":/qmlprofiler/magnifier-minus.png"));
+    buttonZoomOut->setToolTip(tr("Zoom out 10%"));
     connect(buttonZoomOut, SIGNAL(clicked()), this, SIGNAL(zoomOut()));
     connect(this, SIGNAL(enableToolbar(bool)), buttonZoomOut, SLOT(setEnabled(bool)));