diff --git a/kcms/ksplash/package/contents/ui/main.qml b/kcms/ksplash/package/contents/ui/main.qml
--- a/kcms/ksplash/package/contents/ui/main.qml
+++ b/kcms/ksplash/package/contents/ui/main.qml
@@ -27,7 +27,7 @@
 KCM.GridViewKCM {
     KCM.ConfigModule.quickHelp: i18n("This module lets you choose the splash screen theme.")
 
-    enabled: !kcm.testing
+    enabled: !kcm.testing && !kcm.splashScreenSettings.isImmutable("theme")
 
     view.model: kcm.splashModel
     //NOTE: pay attention to never break this binding