[1] The defendant has brought forward nine assignments of error. We shall discuss two of them. He assigns error to the admission of testimony by Bill Wease and Billy Joe Hill that with the defendant they had broken into other places and stolen tractors. We believe this assignment of error has merit.
The State offered evidence of the defendant’s involvement in other crimes to prove the crime for which the defendant was being tried. The State contends that in this case the evidence was properly admitted to prove intent or design and a plan to commit the crime charged. G.S. 8C-1, Rule 404(b) provides:
Evidence of other crimes, wrongs, or acts is not admissible to prove the character of a person in order to show that he acted in conformity therewith. It may, however, be admissible for other purposes, such as proof of motive, opportunity, intent, preparation, plan, knowledge, identity or absence of mistake, entrapment or accident.
Under this rule the evidence was admissible if it proved intent, design, or plan. Prior to the adoption of the rule there were cases which dealt with the question of the proof of intent, design, or plan by the proof of separate crimes. See State v. McClain, 240 N.C. 171, 81 S.E. 2d 364 (1954) and H. Brandis, Brandis on North Carolina Evidence § 91 (1982). We look to these cases for guidance. In State v. Byrd, 60 N.C. App. 624, 300 S.E. 2d 49 (1983) we examined several cases dealing with evidence of other crimes to prove the crime charged. We concluded that the rule had been interpreted so broadly that evidence of other crimes was admissible if the other crimes were similar to and were committed at a time not too far removed from the time of the crime charged. We were reversed by our Supreme Court at 309 N.C. 132, 305 S.E. 2d 724 (1983). The Supreme Court did not discuss the reasons we gave for concluding how evidence of other crimes was so admissible. The Court stated, “[w]e find nothing in any of our cases, however, which would authorize the admission of prior crimes purely because they are ‘similar’ and ‘within a time not too far removed from the crime with which the defendant [is] charged.’ ” Id. at 141, 305 S.E. 2d at 730.
The only relation we can find between the other crimes proved in this case and the crime charged is that they were *511similar and were committed within a time not too far removed from the crime charged. In light of the Supreme Court’s statement in Byrd we do not believe we should hold they were admissible. We believe that under several cases cited in our opinion in Byrd they would be admissible. Perhaps with the adoption of the Evidence Code it is time to enforce the rule more strictly. See State v. Weaver, 79 N.C. App. 244, 339 S.E. 2d 40 (1986). We believe as to plan the rule should be as stated in Brandis § 92 that evidence of other crimes to prove a plan must tend “to show the existence of a plan or design to commit the offense charged, . . . .” We do not believe proof of a separate crime by itself proves a person planned to commit another crime. We cannot see how the evidence in this case was relevant to prove intent or design to commit the crime for which the defendant was tried.
[2] The defendant also assigns error to the court’s refusal to allow him to assert his right not to answer a question on the ground his answer might tend to incriminate him. During the cross examination of the defendant he testified he had some income from the sale of firewood. He was asked by the prosecuting attorney whether he had reported this income to the Internal Revenue Service. The defendant through his attorney asserted his constitutional right not to answer on the ground that the answer might tend to incriminate him. He was required to answer and the defendant testified he had not reported this income to the Internal Revenue Service. G.S. 8C-1, Rule 608 provides in part:
The giving of testimony, whether by an accused or by any other witness, does not operate as a waiver of his privilege against self-incrimination when examined with respect to matters which relate only to credibility.
The testimony of the defendant as to his failure to report income to the Internal Revenue Service related only to his credibility. It was error to require him to answer this question.
As to the defendant’s other assignments of error we find they are without merit or the questions they raise should not recur at a new trial.
New trial.
Judges Whichard and JOHNSON concur.