--- a/phoneengine/engineinfo/inc/mpedatastore.h	Mon Jan 18 20:18:27 2010 +0200
+++ b/phoneengine/engineinfo/inc/mpedatastore.h	Tue Jan 26 11:57:27 2010 +0200
@@ -735,7 +735,7 @@
          * @param aCallId, is the call identification number.
          */
          virtual void SetRemoteColpNumber(
-             TPEPhoneNumber& aColpNumber, 
+             const TPEPhoneNumber& aColpNumber, 
              const TInt aCallId ) = 0;
 
          /**