diff --git a/src/plugins/perfprofiler/perfprofilertool.cpp b/src/plugins/perfprofiler/perfprofilertool.cpp
index 9f949d331ef..ee4381f427a 100644
--- a/src/plugins/perfprofiler/perfprofilertool.cpp
+++ b/src/plugins/perfprofiler/perfprofilertool.cpp
@@ -548,7 +548,7 @@ void PerfProfilerTool::gotoSourceLocation(QString filePath, int lineNumber, int
 
     QFileInfo fi(filePath);
     if (!fi.isAbsolute() || !fi.exists() || !fi.isReadable()) {
-        fi.setFile(m_fileFinder.findFile(filePath).first().toString());
+        fi.setFile(m_fileFinder.findFile(filePath).constFirst().toString());
         if (!fi.exists() || !fi.isReadable())
             return;
     }
diff --git a/src/plugins/qmldesigner/components/transitioneditor/transitioneditorwidget.cpp b/src/plugins/qmldesigner/components/transitioneditor/transitioneditorwidget.cpp
index b2cb67c988d..a62fe1fd8ca 100644
--- a/src/plugins/qmldesigner/components/transitioneditor/transitioneditorwidget.cpp
+++ b/src/plugins/qmldesigner/components/transitioneditor/transitioneditorwidget.cpp
@@ -329,7 +329,7 @@ void TransitionEditorWidget::init()
     if (root.isValid() && root.hasProperty("transitions")) {
         NodeAbstractProperty transitions = root.nodeAbstractProperty("transitions");
         if (transitions.isValid())
-            transition = transitions.directSubNodes().first();
+            transition = transitions.directSubNodes().constFirst();
     }
 
     m_graphicsScene->setTransition(transition);
diff --git a/src/plugins/qmlprofiler/qmlprofilerdetailsrewriter.cpp b/src/plugins/qmlprofiler/qmlprofilerdetailsrewriter.cpp
index 3be8aff25b3..f12e6f97786 100644
--- a/src/plugins/qmlprofiler/qmlprofilerdetailsrewriter.cpp
+++ b/src/plugins/qmlprofiler/qmlprofilerdetailsrewriter.cpp
@@ -118,7 +118,7 @@ void QmlProfilerDetailsRewriter::requestDetailsForLocation(int typeId,
 
 QString QmlProfilerDetailsRewriter::getLocalFile(const QString &remoteFile)
 {
-    const QString localFile = m_projectFinder.findFile(remoteFile).first().toString();
+    const QString localFile = m_projectFinder.findFile(remoteFile).constFirst().toString();
     const QFileInfo fileInfo(localFile);
     if (!fileInfo.exists() || !fileInfo.isReadable())
         return QString();