diff --git a/kcms/runners/kcm.cpp b/kcms/runners/kcm.cpp
--- a/kcms/runners/kcm.cpp
+++ b/kcms/runners/kcm.cpp
@@ -76,6 +76,9 @@
     connect(m_pluginSelector, SIGNAL(changed(bool)),
             this, SIGNAL(changed(bool)));
 
+    connect(m_pluginSelector, &KPluginSelector::defaulted,
+            this, &KCModule::defaulted);
+
     layout->addLayout(headerLayout);
     layout->addWidget(m_pluginSelector);