diff --git a/kcms/componentchooser/componentchooserfilemanager.h b/kcms/componentchooser/componentchooserfilemanager.h
--- a/kcms/componentchooser/componentchooserfilemanager.h
+++ b/kcms/componentchooser/componentchooserfilemanager.h
@@ -43,6 +43,8 @@
     void changed(bool);
 
 private:
+    QRadioButton* findDolphinRadio() const;
+    
     QList<QRadioButton *> mDynamicRadioButtons;
 };
 
diff --git a/kcms/componentchooser/componentchooserfilemanager.cpp b/kcms/componentchooser/componentchooserfilemanager.cpp
--- a/kcms/componentchooser/componentchooserfilemanager.cpp
+++ b/kcms/componentchooser/componentchooserfilemanager.cpp
@@ -20,15 +20,13 @@
 
 #include "componentchooserfilemanager.h"
 #include <kbuildsycocaprogressdialog.h>
-#include <QDebug>
 #include <kprocess.h>
 #include <kmimetypetrader.h>
 #include <kopenwithdialog.h>
 #include <kconfiggroup.h>
 #include <QStandardPaths>
-#include <QFileInfo>
+#include <KSharedConfig>
 
-#include "../migrationlib/kdelibs4config.h"
 
 CfgFileManager::CfgFileManager(QWidget *parent)
     : QWidget(parent), Ui::FileManagerConfig_UI(),CfgPlugin()
@@ -40,23 +38,36 @@
 CfgFileManager::~CfgFileManager() {
 }
 
+QRadioButton * findDolphinRadio(QList<QRadioButton *> dynamicRadioButtons) {
+    auto it = std::find_if(dynamicRadioButtons.begin(), dynamicRadioButtons.end(), [=](QRadioButton *radio) {
+        return radio->property("storageId") == QStringLiteral("org.kde.dolphin.desktop");
+    });
+    if (it == dynamicRadioButtons.end()) {
+        return nullptr;
+    }
+    return *it;
+}
+
 void CfgFileManager::configChanged()
 {
     emit changed(true);
 }
 
 void CfgFileManager::defaults()
 {
     load(nullptr);
+
+    const auto radio = findDolphinRadio(mDynamicRadioButtons);
+    if (radio) {
+        radio->setChecked(true);
+    }
 }
 
 bool CfgFileManager::isDefaults() const
 {
-    if (!mDynamicRadioButtons.isEmpty()) {
-        return !mDynamicRadioButtons.last()->isChecked();
-    } else {
-        return false;
-    }
+    const auto dolphinRadio = findDolphinRadio(mDynamicRadioButtons);
+    // When dolphin is not present, we can't assume any default value
+    return !dolphinRadio || dolphinRadio->isChecked();
 }
 
 static KService::List appOffers()