In this appeal the Commonwealth challenges the sentence imposed upon Appellee after he entered a plea of guilty to driving under the influence, as well as the summary offense of driving while operating privilege is suspended or revoked, DUI-related.1 We reverse and remand with instructions.
Appellee was sentenced to three months of house arrest and one year probation for his drunk driving conviction. On the summary *7offense of driving while operating privilege is suspended or revoked, DUI-related, Appellee was sentenced to intermediate punishment in the form of ninety days of home confinement. On appeal, the Commonwealth contends Ap-pellee’s sentence on this latter conviction is illegal because a sentence of home confinement does not constitute “imprisonment” as required by the statute charged. See 75 Pa.C.S.A. § 1543(b) (“upon conviction, ... [the defendant] shall be sentenced to pay a fine of $1,000 and to undergo imprisonment for a period of not less than 90 days.”). Because section 9721(a)(1) of the Sentencing Code, 42 Pa.C.S.A., prohibits a sentence of intermediate punishment for any offense where a mandatory minimum sentence is applicable unless specifically authorized under section 9763 of the Sentencing Code, continues the Commonwealth, the court below erred in failing to impose a sentence of ninety days imprisonment for the summary conviction. We agree.
The Court recently agreed with the Commonwealth’s present contention in Commonwealth v. Yale, 441 Pa.Super. 404, 657 A.2d 987 (1995). In Yale, Yale entered a plea of guilty to three counts of driving under the influence, the summary offense of driving while operating privileges were suspended or revoked, DUI-related, and the summary offense of accidents involving damage to unattended property. Thereafter, Yale was sentenced on the drunk driving violation to home confinement of six to twenty-three months without electronic monitoring and immediate parole after the minimum sentence was served. He was ordered to pay the costs of prosecution and a $300.00 fine. In addition, he was ordered to perform twenty-five hours of community service and attend an alcohol safe school. On the section 1543(b) conviction Yale was sentenced to ninety days home confinement, to run concurrent with his drunk driving sentence, and to pay a $1,000.00 fine. On the summary charge of damaging unattended property, Yale was fined $50.00.
In its subsequent appeal, the Commonwealth contended that the trial court erred in failing to impose a sentence of ninety days imprisonment for the section 1543(b) conviction. This Court agreed, and reasoned as follows:
Section 9721 of the Sentencing Code expressly prohibits a sentence of intermediate punishment for any offense where a mandatory minimum sentence is applicable unless specifically authorized under section 9763 of the Sentencing Code. See 42 Pa. C.S. § 9721(a)(1). A violation of 75 Pa. C.S. § 3731(a) requires a mandatoiy minimum sentence of forty-eight hours imprisonment, plus fines, and a violation of 75 Pa.C.S. § 1543(b) requires a mandatory minimum sentence of ninety days imprisonment, plus fines.
42 Pa.C.S. § 9763(c) provides the following restriction:
A defendant convicted under 75 Pa.C.S. § 3731(e) (relating to driving under influence of alcohol or controlled substance) may only be sentenced to intermediate punishment:
(1) in a residential inpatient program or in a residential rehabilitative center; or
(2) by house arrest or electronic surveillance combined with drug and alcohol treatment.
However, 42 Pa.C.S. § 9763(c) provides no restriction for violations of 75 Pa.C.S. 1543(b). Therefore, in the absence of an express restriction, it is clear that the mandatoiy minimum sentence applies.
Id. 657 A.2d at 989 (emphasis in original).
In the present ease, the trial court properly sentenced Appellee to an intermediate punishment for his driving under the influence conviction pursuant to section 9763(c). However, the concurrent sentence of intermediate punishment for the section 1543(b) conviction was not permitted. Thus, as in Yale, we must reverse and remand.
Rather than filing an appellate brief, Ap-pellee has forwarded to this Court a stipulation of the parties, which states that he has already served ninety days home confinement for the section 1543(b) conviction. Thus, Appellee contends that the present appeal is moot. We cannot agree.
In this case the Commonwealth timely moved for reconsideration of Appellee’s *8sentence on the basis that the sentence for the suspension violation was illegal, that is, a home monitoring program was not an available sentencing alternative. Clearly, the Commonwealth had the right to pursue such a claim. As our Supreme Court stated in Commonwealth v. Jones, 520 Pa. 385, 554 A.2d 50 (1989):
[B]oth the defendant and the Commonwealth have the right to appeal the legality of a sentence, 42 Pa.C.S.A. § 9781(a), and the illegal sentence imposed in this case would certainly have been corrected on appeal [because the minimum sentences imposed were greater than one-half of the maximum sentences. 42 Pa.C.S.A. § 9756(b) ]. Moreover, it has long been the opinion of a dissenting segment of this Court that an illegal sentence is a legal nullity, and sentencing courts must have the authority to correct such a sentence even if that means increasing the sentence. Accordingly, ... we find no merit to appellant’s claim that the sentencing court herein improperly modified the original illegal sentence that was imposed by increasing the maximum period of incarceration after appellant had begun serving the sentence.
Id. 554 A.2d at 52 (citations and footnote omitted). See also Commonwealth v. Kunish, 529 Pa. 206, 214, 602 A.2d 849, 853 (1992) (with regard to the protections of the double jeopardy clause, statutes relevant to the length of a defendant’s sentence may defeat a legitimate expectation of finality to a criminal sentence; a defendant is charged with knowledge of applicable statutory provisions); Commonwealth v. Johnston, 348 Pa.Super. 160, 164, 501 A.2d 1119, 1121 (1985), aff'd, 515 Pa. 454, 530 A.2d 74 (1987) (appellate review of defendant’s sentence, as sought by the Commonwealth, and a possible subsequent increase therein, were not precluded by double jeopardy considerations); Commonwealth v. Anderson, 304 Pa.Super. 476, 482, 450 A.2d 1011, 1014 (1982) (no sentence is final until the right of appellate review has been exhausted or waived).
Although the court below deried the Commonwealth’s motion, the motion and subsequent appeal put Appellee on notice that the Commonwealth maintained that the sentence was illegal. In addition, there exists in the present case no reliance by Appellee upon the assurance of prison authorities or other clerical errors which worked to Appel-lee’s detriment. See Commonwealth v. Kriston, 527 Pa. 90, 588 A.2d 898 (1991) (defendant who was erroneously transferred by prison authorities into home monitoring, while being assured that time spent therein would be counted toward his minimum sentence, was entitled to credit for time served); Jacobs v. Robinson, 49 Pa.Commw. 194, 410 A.2d 959 (1980) (inasmuch as erroneous release was attributable to prison authorities rather than to any wrongdoing by the prisoner, the prisoner was entitled to credit for the time in question). As noted above, our Supreme Court has stated that an illegal sentence is a legal nullity. Jones, 554 A.2d at 52. Thus, although it appears Appellant served his “illegal sentence” concurrent with his legal sentence on the drunk driving conviction, this fact does not prevent this Court from remanding for the imposition of the mandatory minimum sentence he should have received for the section 1543(b) violation. To hold otherwise would condone the imposition of patently illegal sentences and would invite trial courts to fashion sentences contrary to clear legislative intent.
We reverse and remand this case to the sentencing court for actions consistent with this memorandum. Jurisdiction relinquished.
POPOVICH, J., files a concurring and dissenting statement.
. See 75 Pa.C.S.A. §§ 3731(a)(1) and 1543(b), respectively.