diff --git a/src/plugins/qtsupport/profilereader.cpp b/src/plugins/qtsupport/profilereader.cpp
index 05242252ca1..292e6e937d7 100644
--- a/src/plugins/qtsupport/profilereader.cpp
+++ b/src/plugins/qtsupport/profilereader.cpp
@@ -45,34 +45,36 @@ ProMessageHandler::ProMessageHandler(bool verbose, bool exact)
     : m_verbose(verbose)
     , m_exact(exact)
     //: Prefix used for output from the cumulative evaluation of project files.
-    , m_prefix(tr("[Inexact] "))
+    , m_prefix(QCoreApplication::translate("ProMessageHandler", "[Inexact] "))
 {
-    connect(this, &ProMessageHandler::writeMessage,
-            Core::MessageManager::instance(), &Core::MessageManager::write, Qt::QueuedConnection);
 }
 
+ProMessageHandler::~ProMessageHandler()
+{
+    if (!m_messages.isEmpty())
+        Core::MessageManager::writeMessages(m_messages);
+}
+
+
+
 void ProMessageHandler::message(int type, const QString &msg, const QString &fileName, int lineNo)
 {
     if ((type & CategoryMask) == ErrorMessage && ((type & SourceMask) == SourceParser || m_verbose)) {
-        QString fmsg = format(fileName, lineNo, msg);
-        if (m_exact)
-            emit writeMessage(fmsg, Core::MessageManager::NoModeSwitch);
-        else
-            emit writeMessage(m_prefix + fmsg, Core::MessageManager::NoModeSwitch);
+        appendMessage(format(fileName, lineNo, msg));
     }
 }
 
 void ProMessageHandler::fileMessage(int type, const QString &msg)
 {
     Q_UNUSED(type)
-    if (m_verbose) {
-        if (m_exact)
-            emit writeMessage(msg, Core::MessageManager::NoModeSwitch);
-        else
-            emit writeMessage(m_prefix + msg, Core::MessageManager::NoModeSwitch);
-    }
+    if (m_verbose)
+        appendMessage(msg);
 }
 
+void ProMessageHandler::appendMessage(const QString &msg)
+{
+    m_messages << (m_exact ? msg : m_prefix + msg);
+}
 
 ProFileReader::ProFileReader(QMakeGlobals *option, QMakeVfs *vfs)
     : QMakeParser(ProFileCacheManager::instance()->cache(), vfs, this)
diff --git a/src/plugins/qtsupport/profilereader.h b/src/plugins/qtsupport/profilereader.h
index b8556f25ff4..cf7da8c8763 100644
--- a/src/plugins/qtsupport/profilereader.h
+++ b/src/plugins/qtsupport/profilereader.h
@@ -38,13 +38,11 @@
 namespace QtSupport {
 namespace Internal { class QtSupportPlugin; }
 
-class QTSUPPORT_EXPORT ProMessageHandler : public QObject, public QMakeHandler
+class QTSUPPORT_EXPORT ProMessageHandler : public QMakeHandler
 {
-    Q_OBJECT
-
 public:
     ProMessageHandler(bool verbose = true, bool exact = true);
-    ~ProMessageHandler() override = default;
+    virtual ~ProMessageHandler();
 
     void aboutToEval(ProFile *, ProFile *, EvalFileType) override {}
     void doneWithEval(ProFile *) override {}
@@ -54,16 +52,16 @@ public:
     void setVerbose(bool on) { m_verbose = on; }
     void setExact(bool on) { m_exact = on; }
 
-signals:
-    void writeMessage(const QString &error, Core::MessageManager::PrintToOutputPaneFlags flag);
-
 private:
+    void appendMessage(const QString &msg);
+
     bool m_verbose;
     bool m_exact;
     QString m_prefix;
+    QStringList m_messages;
 };
 
-class QTSUPPORT_EXPORT ProFileReader : public ProMessageHandler, public QMakeParser, public ProFileEvaluator
+class QTSUPPORT_EXPORT ProFileReader : public QObject, public ProMessageHandler, public QMakeParser, public ProFileEvaluator
 {
     Q_OBJECT