If the defence of an accused is an alibi and the court before which the proceedings are pending is of the opinion that the accused may be prejudiced in making such defence if proof is admitted that the act or offence in question was committed on a day or at a time other than the day or time stated in the charge, the court shall reject such proof notwithstanding that the day or time in question is within a period of three months before or after the day or time stated in the charge, whereupon the same consequences shall follow as are mentioned in proviso (b) of section 92(2).