SPAETH, Judge:

This appeal is from judgments of sentence for rape, indecent assault, burglary, simple assault, recklessly endangering another person, and terroristic threats. Appellant argues that he is entitled to a new trial because his trial counsel was ineffective. This argument is made by the same office — the Allegheny County Public Defender — as represented appellant at trial. Nothing in the record indicates that appellant made a knowing choice to continue to be represented by the office he claims was ineffective. Cf. Commonwealth v. Gardner, 480 Pa. 7, 389 A.2d 58 (1978); Commonwealth v. Roach, 268 Pa. Super. 340, 408 A.2d 495 (1979). At minimum, therefore, appellant is entitled to a remand for appointment of appellate counsel not associated with the defender's office. Commonwealth v. Patrick, 477 Pa. 284, 383 A.2d 935 (1978); Commonwealth v. Wright, 473 Pa. 395, 374 A.2d 1272 (1977); Commonwealth v. Boyer, 277 Pa. Super. 82, 419 A.2d 671 (1980). However, if the ineffectiveness of counsel is apparent on the face of the record, there is no need to remand for appointment of new counsel. Commonwealth v. Drake, 489 Pa. 541, 414 A.2d 1023 (1980); Commonwealth v. Fox, 476 Pa. 475, 383 A.2d 199 (1978). The appropriate remedy is to grant a new trial. We have concluded that this is a case where the ineffectiveness of trial counsel is apparent on the face of the record. We shall therefore vacate the sentence and remand for new trial.

One of appellant's claims is that his trial counsel was ineffective in filing overly general, "boilerplate," post-trial motions. For example, paragraph number 5 of the motion for new trial read: "The learned Trial Court erred in denying Defendant's motions made during the trial." The lower court properly refused to consider such a general assignment of error. Pa.R.Cr.P. 1123(a); Commonwealth v. Blair, 460 Pa. 31, 331 A.2d 213 (1975). One assignment of error that the lower court did find specific enough to require consideration was paragraph number 6 of the motion for new trial, which read: The learned Trial Court erred in denying Defendant's motion for a postponement." We agree with the lower court that it did not err in denying the motion for postponement. However, this conclusion compels us to the further conclusion that appellant's trial counsel was ineffective.

At trial, the victim testified as follows. Appellant was a friend of her younger brothers' and had stayed with them in her house while she had been out of town a few weeks before the night in question. On that night, at about 11 p.m., she was asleep in her living room when appellant appeared in the room. He no longer had a key to the house and she assumed he had entered through an unlocked upstairs window, which was accessible from the ground. Appellant told her he was looking for something he had left in the house. Although he appeared to be drunk or high he left the house without further incident. Much later in the night, when she was asleep in her bed, she again became aware of appellant's being in the house. Over the next several hours he threatened her with a knife, tied her up, and raped her twice.

Appellant gave conflicting testimony, as follows. He had been at a wedding reception until 3 a.m. On his way home from the reception he realized that a chrome strip he needed for a car he was working on was at the victim's house. He went to the house, knocked on the door, and was admitted. After looking unsuccessfully for the chrome strip he sat on the living room couch with the victim and she started making advances to him. He responded to these advances and they engaged in consensual intercourse, which, according to appellant, they had done on two prior occasions.

At the beginning of the trial, appellant's counsel had requested a two-day postponement in order to locate two witnesses who, it was said, could corroborate appellant's account of the early part of the evening. This would provide a partial alibi and also impeach the victim by contradicting her version of appellant's whereabouts on the night in question. Counsel explained that although appellant had been represented from the beginning by the public defender's office, he personally had been assigned the case only the previous Friday, had had another trial in the interim, and had learned only that morning of the two witnesses. The Commonwealth objected to any further delay, and also argued that any alibi witnesses would be subject to exclusion because of failure to comply with Pa.R.Cr.P. 305 C(1), which required the details of an alibi defense and the names of prospective alibi witnesses to be disclosed at the time the omnibus pretrial motion was due to be filed. After a colloquy, during which the lower court acknowledged the staffing problems of the public defender's office and also expressed concern about the cost and inconvenience to the Commonwealth of further delay, the court denied the request for postponement but said that it would try to accommodate appellant by ending the first day of trial early so that counsel could try to locate the witnesses. N.T. 13-14. Informal contact was made with at least one of the prospective witnesses, but neither of them was subpoenaed, and neither of them appeared during the trial.

In its opinion in support of its denial of appellant's post-trial motions the lower court wrote:

It appears to the Court that there was sufficient time and opportunity in spite of a late start, for the defendant to have the presence of Mrs. Byrizinski as a witness to testify on his behalf, but that the means of securing the witness's attendance were half-hearted and ineffectual. Instead of asking the witness to come to the process server, why did not the process server go to the witness? It is to be noted that there was no direct request made for the Court to intercede and lend the assistance of means available to the Court to compel the attendance of this witness — or of any other witness. . . .

The Court is of the opinion that there was no prejudice to the defendant in refusing his request for postponement on the grounds of needing time to get witnesses. As it turned out, with the shortened daily sessions and the intervening weekend recess, there was adequate opportunity for defendant to contact his witnesses, even as the trial was in progress. The time required for trial of this case would have been less than two Court days if it had been moved along steadily. Instead, it was spread out and dragged on over a period of six days, with only a few hours of actual Courtroom time being spent in trial in each of those six days.

Slip op., reprinted in appellant's brief at 15a.

A fair paraphrase of these two paragraphs is that the lower court found that its denial of appellant's trial counsel's motion for postponement was not an abuse of discretion because effective counsel would have easily been able to secure the attendance of the witnesses in the time available.

In arguing for the postponement, appellant's trial counsel stated to the lower court that the missing witnesses would testify that appellant was at a wedding reception until 3 a.m. N.T. 4, 21. This would have contradicted the victim's testimony that appellant made his first illicit entry into her home at 11 p.m. The dissent finds that this first entry into the victim's house was a collateral matter because appellant was not charged with any crime resulting from that entry. We are not persuaded by this reasoning. Both entries allegedly took place the same evening, within four hours of each other. It is highly unlikely that the victim would have been accurate in her account of the 3 a.m. entry while making up out of whole cloth an equally detailed account of the earlier entry. The first person to whom the victim told her story, her neighbor, did not testify that she had been told of two separate entries; she could only recall being told of a single sequence of events starting at 11 p.m. N.T. 175-177. The jury was presented with two different accounts of that night, the victim's and appellant's. It is of course possible that even if the missing witnesses had been called and had contradicted the victim's account of the first part of the evening, the jury might still have believed her account of the second part. However, this possibility does not render the testimony collateral. Testimony that contradicted any part of the victim's account of that night would have been admissible. See McCormick, Evidence § 47 at 99 (2d ed. 1972) ("the contradiction of any part of the witness's account of the background and circumstances of a material transaction, which as a matter of human experience he would not be mistaken about if his story were true [is admissible]"). Because the lower court's opinion as much as finds that the failure to produce these witnesses was a result of the ineffectiveness of counsel and because it appears that what these witnesses would have testified to would have been both admissible and critical to appellant's case, appellant is entitled to a new trial.

This case is very similar to Commonwealth v. Fallings, 251 Pa. Super. 365, 380 A.2d 822 (1977). Fallings was convicted by a jury of burglary. On appeal he argued that his trial counsel had been ineffective in not securing the presence at trial of one Nathaniel Sutton. Sutton had already pleaded guilty to the same charge. Fallings argued on appeal that Sutton had testified at the preliminary hearing that Fallings was not criminally involved in the burglary, and that if present at trial, Sutton would have repeated that testimony. However, although Fallings' trial counsel sent Sutton a registered letter requesting his presence at trial and made a motion to have Sutton admitted to bail as a material witness — a motion that was unsuccessful because it could be made only by the Commonwealth, Pa.R.Crim.P. 4017(a) — counsel never caused a subpoena to be issued or served. When Sutton failed to appear at trial, counsel requested a continuance, which was denied. We found that Fallings' counsel had been ineffective in his efforts to secure Sutton's presence at trial. We distinguished Commonwealth v. Twiggs, 460 Pa. 105, 331 A.2d 440 (1975). In Twiggs it was not clear from the record whether counsel's failure to secure the missing witness "was based on a reassessment of its [the witness's testimony] worth and a conclusion that it was of little or no value" or was "the result of sloth or lack of awareness of available alternatives," Commonwealth v. Twiggs, 460 Pa. at 110-11, 331 A.2d at 443. Commonwealth v. Fallings, 251 Pa.Super. at 369-70, 380 A.2d at 824. In Fallings, there was no such ambiguity; the record disclosed that counsel's failure to seek compulsory process in the proper manner was not the result of a reassessment of the desirability of securing Sutton's presence. Id., 251 Pa.Super. at 370, 380 A.2d at 824. Having thus found from the face of the record that there could have been no reasonable basis for trial counsel's behavior, we reversed the judgment of sentence and ordered a new trial, citing Commonwealth v. Turner, 469 Pa. 319, 365 A.2d 847 (1976). Id., 251 Pa.Super. at 371-72, 380 A.2d at 825. The circumstances of this case require the same result.

Judgments of sentence vacated and case remanded for new trial.

VAN der VOORT, J., files a dissenting opinion.