The Financial Post reports in its Saturday edition that the CRTC has officially changed its rules to prevent broadcasters from swapping out U.S. commercials for local ads during the Super Bowl. The Post's Emily Jackson writes that the move comes despite a continuing legal dispute over its right to block Canadian advertising during the much-hyped sports event. The Canadian Radio-television and Telecommunications Commission issued a distribution order Friday to stop simultaneous substitution as of 2017. Simsub, as it is known, temporarily replaces the signal of an American channel rebroadcast in Canada with a local channel showing the same program and is used to show local commercials. This could mean Canadians will be able to watch U.S. ads during the Super Bowl for the first time next year. The CRTC first announced plans to get rid of simsub during the Super Bowl in 2015 citing consumers' desire to see the flashier American ads. The rule only applies to rebroadcasts of U.S. stations, so Canadian stations playing the event can continue to play Canadian ads. BCE's Bell Media unit and the NFL challenged the simsub ban in Federal Court of Appeal, which is expected to rule on the matter in the next few months.