diff --git a/src/kcmoduleproxy.h b/src/kcmoduleproxy.h
--- a/src/kcmoduleproxy.h
+++ b/src/kcmoduleproxy.h
@@ -144,6 +144,13 @@
      */
     bool changed() const;
 
+    /**
+     * @return true if the module is matching default settings
+     *
+     * @since 5.65
+     */
+    bool defaulted() const;
+
     /**
      * Access to the actual module.
      * It may return NULL if anything goes wrong.
@@ -224,6 +231,7 @@
 
 private:
     Q_PRIVATE_SLOT(d_func(), void _k_moduleChanged(bool))
+    Q_PRIVATE_SLOT(d_func(), void _k_moduleDefaulted(bool))
     Q_PRIVATE_SLOT(d_func(), void _k_moduleDestroyed())
     Q_PRIVATE_SLOT(d_func(), void _k_ownerChanged(const QString &service, const QString &oldOwner, const QString &newOwner))
 };
diff --git a/src/kcmoduleproxy.cpp b/src/kcmoduleproxy.cpp
--- a/src/kcmoduleproxy.cpp
+++ b/src/kcmoduleproxy.cpp
@@ -94,6 +94,7 @@
         kcm = KCModuleLoader::loadModule(modInfo, KCModuleLoader::Inline, parent, args);
 
         QObject::connect(kcm, SIGNAL(changed(bool)), parent, SLOT(_k_moduleChanged(bool)));
+        QObject::connect(kcm, SIGNAL(defaulted(bool)), parent, SLOT(_k_moduleDefaulted(bool)));
         QObject::connect(kcm, SIGNAL(destroyed()), parent, SLOT(_k_moduleDestroyed()));
         QObject::connect(kcm, &KCModule::quickHelpChanged, parent, &KCModuleProxy::quickHelpChanged);
         parent->setWhatsThis(kcm->quickHelp());
@@ -184,6 +185,18 @@
     emit q->changed(q);
 }
 
+void KCModuleProxyPrivate::_k_moduleDefaulted(bool d)
+{
+    if (defaulted == d) {
+        return;
+    }
+
+    Q_Q(KCModuleProxy);
+    defaulted = d;
+    emit q->changed(changed);
+    emit q->changed(q);
+}
+
 void KCModuleProxyPrivate::_k_moduleDestroyed()
 {
     kcm = nullptr;
@@ -260,6 +273,12 @@
     return d->changed;
 }
 
+bool KCModuleProxy::defaulted() const
+{
+    Q_D(const KCModuleProxy);
+    return d->defaulted;
+}
+
 KCModuleInfo KCModuleProxy::moduleInfo() const
 {
     Q_D(const KCModuleProxy);
diff --git a/src/kcmoduleproxy_p.h b/src/kcmoduleproxy_p.h
--- a/src/kcmoduleproxy_p.h
+++ b/src/kcmoduleproxy_p.h
@@ -31,7 +31,7 @@
 protected:
     KCModuleProxyPrivate(KCModuleProxy *_parent, const KCModuleInfo &info, const QStringList &_args)
         : args(_args), kcm(nullptr), topLayout(nullptr), rootInfo(nullptr), modInfo(info),
-          changed(false), bogusOccupier(false), parent(_parent)
+          changed(false), defaulted(false), bogusOccupier(false), parent(_parent)
     {
     }
 
@@ -48,6 +48,11 @@
      */
     void _k_moduleChanged(bool);
 
+    /**
+     * Makes sure the proper variables is set and signals are emitted.
+     */
+    void _k_moduleDefaulted(bool);
+
     /**
      * Zeroes d->kcm
      */
@@ -68,6 +73,7 @@
     QString dbusPath;
     KCModuleInfo modInfo;
     bool changed = false;
+    bool defaulted = false;
     bool bogusOccupier = false;
     KCModuleProxy *parent = nullptr;
     KCModuleProxy *q_ptr = nullptr;