diff --git a/shell/main.cpp b/shell/main.cpp
index c5e6a358e..20d849334 100644
--- a/shell/main.cpp
+++ b/shell/main.cpp
@@ -27,6 +27,7 @@
 #include <QDBusConnection>
 #include <QDBusMessage>
 #include <QtQml/QQmlDebuggingEnabler>
+#include <QLoggingCategory>
 
 #include <KAboutData>
 #include <KQuickAddons/QtQuickSettings>
@@ -47,6 +48,18 @@
 #include <QDir>
 #include <QDBusConnectionInterface>
 
+static QLoggingCategory::CategoryFilter oldCategoryFilter;
+
+//
+void filterConnectionSyntaxWarning(QLoggingCategory *category)
+{
+    if (qstrcmp(category->categoryName(), "qt.qml.connections") == 0) {
+        category->setEnabled(QtWarningMsg, false);
+    } else if (oldCategoryFilter) {
+        oldCategoryFilter(category);
+    }
+}
+
 int main(int argc, char *argv[])
 {
     if (qEnvironmentVariableIsSet("PLASMA_ENABLE_QML_DEBUG")) {
@@ -70,6 +83,9 @@ int main(int argc, char *argv[])
 
     QQuickWindow::setDefaultAlphaBuffer(true);
 
+    oldCategoryFilter = QLoggingCategory::installFilter(filterConnectionSyntaxWarning);
+    qDebug() << "install " << (void*)oldCategoryFilter;
+
     const bool qpaVariable = qEnvironmentVariableIsSet("QT_QPA_PLATFORM");
     KWorkSpace::detectPlatform(argc, argv);
     QApplication app(argc, argv);