Article 7.4 permits a Norwegian disability or survivors benefit to be converted to an old-age benefit of an equal amount at age 67.  Without this provision, a disability or survivors benefit would be reduced at the time it is converted, since the old-age pension is computed based on the actual periods of coverage and does not include the additional credit granted for expected future years (see comments on Article 7.2(a)).  The wording of this provision has been slightly modified from the original agreement merely to clarify that the conversion from a disability or survivors pension to an old-age pension at age 67 applies not just to Norwegian national law benefits, but also to Totalization benefits payable by Norway.