--- a/shell/shellcorona.cpp

+++ b/shell/shellcorona.cpp

@@ -718,7 +718,13 @@ void ShellCorona::load()

         setImmutability(Plasma::Types::SystemImmutable);

     } else {

         KConfigGroup coronaConfig(config(), "General");

-        setImmutability((Plasma::Types::ImmutabilityType)coronaConfig.readEntry("immutability", static_cast<int>(Plasma::Types::Mutable)));

+        bool immutability_present = coronaConfig.readEntry("immutability", 0) != 0;

+        if( immutability_present ) {

+            setImmutability(Plasma::Types::UserImmutable);

+        } else {

+            coronaConfig.writeEntry("immutability", static_cast<int>(Plasma::Types::Mutable));

+            setImmutability(Plasma::Types::Mutable);

+        }

     }

 }