diff --git a/autotests/testscreenconfig.cpp b/autotests/testscreenconfig.cpp
--- a/autotests/testscreenconfig.cpp
+++ b/autotests/testscreenconfig.cpp
@@ -228,6 +228,9 @@
     }
     QVERIFY(brokenConfig2->screen()->maxActiveOutputsCount() < enabledOutputsCount);
     QVERIFY(!Config::canBeApplied(brokenConfig2));
+
+    const ConfigPtr nulllConfig;
+    QVERIFY(!Config::canBeApplied(nulllConfig));
 }
 
 void testScreenConfig::supportedFeatures()
diff --git a/src/config.cpp b/src/config.cpp
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -100,6 +100,10 @@
 
 bool Config::canBeApplied(const ConfigPtr &config, ValidityFlags flags)
 {
+    if (!config) {
+        qCDebug(KSCREEN) << "canBeApplied: Config not available, returning false";
+        return false;
+    }
     ConfigPtr currentConfig = BackendManager::instance()->config();
     if (!currentConfig) {
         qCDebug(KSCREEN) << "canBeApplied: Current config not available, returning false";