diff --git a/cfg/kde.cfg b/cfg/kde.cfg
index 7d18998a29f..1131d5e0c50 100644
--- a/cfg/kde.cfg
+++ b/cfg/kde.cfg
@@ -20,6 +20,11 @@
   <define name="KDE_PACKED" value=""/>
   <define name="KDE_VERSION" value="KDE_MAKE_VERSION(KDE_VERSION_MAJOR,KDE_VERSION_MINOR,KDE_VERSION_RELEASE)"/>
   <define name="KDE_WEAK_SYMBOL" value=""/>
+  <define name="K_PLUGIN_CLASS_WITH_JSON(class_name, json_name)" value=""/>
+  <define name="K_PLUGIN_CLASS(class_name)" value=""/>
+  <define name="K_PLUGIN_FACTORY(class_name, ...)" value=""/>
+  <define name="K_PLUGIN_FACTORY_WITH_JSON(class_name, json_name, ...)" value=""/>
+  <define name="EXPORT_KONTACT_PLUGIN_WITH_JSON(class_name, json_name)" value=""/>
   <!-- ########## KDE Allocation / Deallocation ########## -->
   <!-- ########## KDE Functions ########## -->
   <!-- template<typename T > T KConfigGroup::readEntry ( const QString & key, const T & aDefault ) const -->
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 467e6e95e4e..3b516f38965 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -148,7 +148,7 @@ if (BUILD_TESTS)
         add_cfg(gnu.c ADD_LIBRARY posix)
         add_cfg(googletest.cpp)
         add_cfg(gtk.c)
-        add_cfg(kde.cpp)
+        add_cfg(kde.cpp ADD_LIBRARY qt)
         add_cfg(libcurl.c)
         add_cfg(libsigc++.cpp)
         add_cfg(lua.c)
diff --git a/test/cfg/kde.cpp b/test/cfg/kde.cpp
index 069aa5d2d48..71533ca781f 100644
--- a/test/cfg/kde.cpp
+++ b/test/cfg/kde.cpp
@@ -2,7 +2,7 @@
 // Test library configuration for kde.cfg
 //
 // Usage:
-// $ cppcheck --check-library --library=kde --enable=style,information --inconclusive --error-exitcode=1 --inline-suppr test/cfg/kde.cpp
+// $ cppcheck --check-library --library=kde --library=qt --enable=style,information --inconclusive --error-exitcode=1 --inline-suppr test/cfg/kde.cpp
 // =>
 // No warnings about bad library configuration, unmatched suppressions, etc. exitcode=0
 //
@@ -11,6 +11,7 @@
 #include <KDE/KGlobal>
 #include <KDE/KConfigGroup>
 #include <klocalizedstring.h>
+#include <kpluginfactory.h>
 
 class k_global_static_testclass1 {};
 K_GLOBAL_STATIC(k_global_static_testclass1, k_global_static_testinstance1);
@@ -41,3 +42,45 @@ void i18n_test()
     (void)xi18nc("Text", "Context");
     (void)ki18nc("Text", "Context");
 }
+
+class PluginWithoutMetaData : public QObject
+{
+    Q_OBJECT
+public:
+    // Add a default arg to make sure we do not get an ambiguity compiler error
+    explicit PluginWithoutMetaData(const QObject *, const QVariantList &args = {})
+    : QObject()
+    {
+        Q_UNUSED(args)
+    };
+};
+
+K_PLUGIN_CLASS(PluginWithoutMetaData)
+
+class StaticSimplePluginClass : public QObject
+{
+    Q_OBJECT
+
+public:
+    // Next to the assertion below, ensure that we have no ambiguity!
+    explicit StaticSimplePluginClass(QObject *parent, const QString &data = {})
+    : QObject(parent)
+    {
+        // We have added a default arg, but KPluginFactory should still provide the valid metadata instead of the default one
+        data = QString("foo");
+    }
+};
+K_PLUGIN_CLASS_WITH_JSON(StaticSimplePluginClass, "data/jsonplugin.json")
+
+class ClipboardPlugin : public Purpose::PluginBase
+{
+    Q_OBJECT
+public:
+    using PluginBase::PluginBase;
+    Purpose::Job *createJob() const override
+    {
+        return new ClipboardJob(nullptr);
+    }
+};
+
+K_PLUGIN_FACTORY_WITH_JSON(Clipboard, "clipboardplugin.json", foo)
diff --git a/test/cfg/runtests.sh b/test/cfg/runtests.sh
index 1ff731abe16..bfc5e8f04f3 100755
--- a/test/cfg/runtests.sh
+++ b/test/cfg/runtests.sh
@@ -507,7 +507,7 @@ function check_file {
         kde.cpp)
             # TODO: "kde-4config" is no longer commonly available in recent distros
             #kde_fn
-            "${CPPCHECK}" "${CPPCHECK_OPT[@]}" --library="$lib" "${DIR}""$f"
+            "${CPPCHECK}" "${CPPCHECK_OPT[@]}" --library="$lib" --library=qt "${DIR}""$f"
             ;;
         libcurl.c)
             libcurl_fn