diff --git a/src/kcmodule.h b/src/kcmodule.h
--- a/src/kcmodule.h
+++ b/src/kcmodule.h
@@ -328,17 +328,6 @@
      */
     KConfigDialogManager *addConfig(KCoreConfigSkeleton *config, QWidget *widget);
 
-    /**
-     * Adds a KConfigskeleton @p config to watch the widget @p widget
-     *
-     * This function is useful if you need to handle multiple configuration files.
-     *
-     * @return a pointer to the KConfigDialogManager in use
-     * @param config the KConfigSkeleton to use
-     * @param widget the widget to watch
-     */
-    KConfigDialogManager *addConfig(KConfigSkeleton *config, QWidget *widget);
-
     /**
      * Sets the quick help.
      */
diff --git a/src/kcmodule.cpp b/src/kcmodule.cpp
--- a/src/kcmodule.cpp
+++ b/src/kcmodule.cpp
@@ -116,15 +116,6 @@
     return manager;
 }
 
-KConfigDialogManager *KCModule::addConfig(KConfigSkeleton *config, QWidget *widget)
-{
-    KConfigDialogManager *manager = new KConfigDialogManager(widget, config);
-    manager->setObjectName(objectName());
-    connect(manager, &KConfigDialogManager::widgetModified, this, &KCModule::widgetChanged);
-    d->managers.append(manager);
-    return manager;
-}
-
 void KCModule::setNeedsAuthorization(bool needsAuth)
 {
     d->_needsAuthorization = needsAuth;
diff --git a/src/kconfigdialogmanager.h b/src/kconfigdialogmanager.h
--- a/src/kconfigdialogmanager.h
+++ b/src/kconfigdialogmanager.h
@@ -230,13 +230,6 @@
      */
     KConfigDialogManager(QWidget *parent, KCoreConfigSkeleton *conf);
 
-    /**
-     * Constructor.
-     * @param parent  Dialog widget to manage
-     * @param conf Object that contains settings
-     */
-    KConfigDialogManager(QWidget *parent, KConfigSkeleton *conf);
-
     /**
      * Destructor.
      */
diff --git a/src/kconfigdialogmanager.cpp b/src/kconfigdialogmanager.cpp
--- a/src/kconfigdialogmanager.cpp
+++ b/src/kconfigdialogmanager.cpp
@@ -72,14 +72,6 @@
     init(true);
 }
 
-KConfigDialogManager::KConfigDialogManager(QWidget *parent, KConfigSkeleton *conf)
-    : QObject(parent), d(new KConfigDialogManagerPrivate(this))
-{
-    d->m_conf = conf;
-    d->m_dialog = parent;
-    init(true);
-}
-
 KConfigDialogManager::~KConfigDialogManager()
 {
     delete d;