Opinion by
The Commonwealth appeals the order of the lower court suppressing certain evidence seized by the police pursuant to a search warrant which connected appellee, Mary Lou Scavincky, with the operation of a lottery.1 The court below found as a fact that certain alterations were made on the warrant by the police after its submission to the magistrate for execution.2 Accordingly, the lower court ruled that the Commonwealth had failed in its burden to prove probable cause for the search. We conclude that even excluding the alterations from the affidavit of the search warrant, there was sufficient information upon which the magistrate could base a finding of probable cause.
On November 4, 1974 Trooper John J. Zelen of the Pennsylvania State Police filed an application for a search warrant with the local magistrate. The probable cause section of the affidavit is as follows:3
*553“On 29 OCT 1974, I personally met with a confidential informant, who is reliable, and has been used in the past. This informant has supplied information to this officer and other members of the Pennsylvania State Police, on a confidential basis, that has resulted in the arrests and conviction of Julie BURDELL, Frank GREGOR, George KMETZ and Frank PIATEK, in the Courts of Allegheny County, for Lottery Operations.
This informant stated that Mary Lou SCAVINCKY, aka Lynn WOODS, runs a telephone betting operation at 2602 Brinton Manor Rd., where she takes lottery bets over the telephone from various individuals, within the confines of this apartment. These numbers bets are taken over telephone number (412) 823-4694. The informant personally knows the party involved in this operation and the location of the above telephone number.
My informant further stated that this operation runs during the week days from Monday thru Saturday, between 11:30 AM to approximately 3:30 PM. During which time SCAVINCKY aka WOODS takes the numbers bets over the telephone. My informant also stated that this apartment is rented in the name of Lynn WOODS, however the person occupying the apartment is one Mary Lou SCAVINCKY who also has a residence at 810 Spring St., N. Braddock Pa. Operates a Green Buick Le Sabre, Reg. #16574F.
On 30 OCT 1974, I personally met with my informant who took this officer and showed me the apartment at 2602 Brinton Manor Rd., at which time the name of WOODS was noted on the mail box for apartment #2. The informant then placed a telephone call to 823-4694, and placed a number of bets over this number with a person he identified as Mary Lou SCAVINCKY.
*554On 31 OCT 1974, I again personally met with my informant who stated that this operation was still in progress. At this time he placed a series of numbers bets over telephone number 823-4694 with a female the informant identified as SCAVINCKY.
On 1 NOV 1974, I again met with my informant who stated that he knew that the operation was still in progress, and he then placed a series of numbers bets over telephone number 823-4694 with a female he identified as SCAVINCKY.
On 4 NOV 1974, I again met with my informant who stated that this operation was still in progress, and he again placed a series of numbers bets over telephone number 823-4694 with a female he identified as SCAVINCKY.
Survelliance [sic] was conducted by this officer on the dates of 29 OCT 1974, 30 OCT 1974, 31 OCT 1974, 1 NOV 1974, and observed the vehicle which the informant describes [sic] as being operated by SCAVINCKY parked in the parking area of 2602 Brinton Manor Rd., Braddock Hills, Pa. The vehicle a Green Buick with a vinyl top bearing Pa. Reg. 16574F was observed between 12:15 PM until approximately 3:30 PM after which time the vehicle left the area.
A check of the registration number 16574F reveals that it is issued to Mary Lou SCAVINCKY, 810 Spring St., N. Braddock Pa.
As the informant personally knows the subject SCAVNIVKY, [sic] who is involved in this operation, and having personally showed this officer the location of the residence, particulars of the informants [sic] numbers bets are omitted to protect the identity of the informant.”
*555The warrant in this case was executed long after the effective date of Pa.R.Crim.P. 2003(a) which restricts the issuing authority (the magistrate) to the evidence contained in the affidavit in his consideration of probable cause. Nevertheless, Trooper Zelen, the affiant, was permitted to testify at the suppression hearing to explain the obvious alteration of the phone number oil the affidavit. He testified that after he typed the application for the search warrant, he proof-read it, and realized that he had typed the wrong phone number. He accordingly erased the erroneous digits and typed in the correct digits. On cross-examination, however, it was brought out that the new digits on the phone number had been typed by a different typewriter.
To determine the validity of the probable cause section of a search warrant, based on hearsay information, we must follow the often-quoted guidelines set forth by the United States Supreme Court in Aguilar v. Texas, 378 U.S. 108, 114-115 (1964): “Although an affidavit may be based on hearsay information and need not reflect the direct personal observations of the affiant, the magistrate must be informed of some of the underlying circumstances from which the informant concluded that the [objects to be seized] were where he claimed they were, and some of the underlying circumstances from which the officer concluded that the informant, whose identity need not be disclosed, was ‘credible’ or his information ‘reliable’.” (Citations and footnote omitted).
First, we are convinced that the affidavit in the present case satisfies the second prong of the Aguilar test in that there are sufficient circumstances in the affidavit from which to conclude that the informant was reliable. Here, the affidavit listed four persons who were arrested and convicted of lottery operation as a result of information supplied to the police by this informant. The informant’s reliability was thus established. See Commonwealth v. Lucchese, 233 Pa. Superior Ct. 273, 335 A.2d 508 (1975).
The more difficult prong of the test we must consider *556in this case is whether the affidavit sets forth sufficient circumstances to conclude that the objects to be seized (lottery paraphernalia) were where the informant claimed they were. Mere conclusions that someone is breaking the law or that certain contraband is at a specific location are insufficient to satisfy this test. See Spinelli v. United States, 393 U.S. 410 (1969). Moreover, in the present case, we have the additional complicating factor that according to the findings of fact of the lower court a misstatement occurred in drafting the warrant; i.e. Trooper Zelen typed the wrong phone number of defendant on the original warrant and corrected this after the execution of the warrant. In Commonwealth v. Jones, 229 Pa. Superior Ct. 224, 323 A.2d 879, allocatur refused, 229 Pa. Superior Ct. xxxv (1974), this Court observed that a warrant is defective only if there was a deliberate misstatement of material facts by the police. “A material fact is defined therein to be one without which probable cause to search would not exist. Such a distinction is, of course, desirable since the warrants are ordinarily drafted in haste from sketchy notes, and minor discrepancies are virtually unavoidable.” Id. at 230, 323 A.2d at 881. In Jones, our Court proceeded to find that a material misstatement did not occur in the warrant and held that there was sufficient other information upon which to base a finding of probable cause.
In the instant case we must therefore determine whether the misstatement as to the phone number precluded a finding of probable cause.4 Excluding the phone number from the probable cause section of the affidavit leaves us with the following circumstances to support the informant’s belief that the defendant was operating a lottery: (1) the informant knew defendant’s name as well as her alias; (2) the informant knew the *557address of the apartment from which the operation took place and that the apartment was rented under the assumed alias; (3) the informant knew that defendant had a residence at another location and that she owned a certain automobile; (4) the informant knew that this operation ran between 11:30 a.m. and 3:30 p.m. Monday through Saturday; (5) surveillance and investigation by Trooper Zelen disclosed that defendant did in fact reside at another location, that she owned the automobile identified by the informant, and that the vehicle was outside the apartment where the lottery operation allegedly took place between 12:15 p.m. and 3:30 p.m. on four straight days; (6) on four of the seven days preceding the issuance of the search warrant the informant in the presence of Trooper Zelen placed over the telephone a series of lottery bets with a female the informant identified as the defendant; and (7) the informant personally showed the officer the location of defendant’s apartment where the lottery allegedly operated and defendant’s alias was observed by the officer on the mail box for the apartment.
Similar cases have been before our Court. In Commonwealth v. Gianelli, 228 Pa. Superior Ct. 225, 323 A.2d 810 (1974), we upheld a search warrant for a lottery establishment on the basis of information supplied by a confidential informant in spite of the fact that the informant had not placed any bet with the defendant. There, other factors such as a detailed description of the mode of operation and other corroborating facts were considered sufficient circumstances to support the informant’s belief that a lottery was in operation.
Again in Commonwealth v. Lucchese, supra we upheld a search warrant for a home where a betting operation took place. As in the present case, the home was under surveillance by the police and the informant in the presence of the affiant placed several bets with the defendant. However, the facts of that case do not disclose whether the affiant listed the defendant’s telephone number in the affidavit of the search warrant. *558Nevertheless, this Court observed that “[t]he telephone calls made by the informant in the presence of the police officer shortly before the warrant issued, the placing of bets at the time, and the informant’s identification of the appellant as the person with whom he placed the bets combined with the informant’s reliability to provide sufficient underlying circumstances to establish probable cause.” Id. at 279, 335 A.2d at 511-12.
In Commonwealth v. Williams, 236 Pa. Superior Ct. 184, 345 A.2d 267 (1975), the probable cause section of the affidavit set forth that the informant had placed football bets with defendant over a certain telephone number on several occasions. The defendant argued that the affidavit failed to disclose the address of the defendant. Our Court held that this was not fatal to the warrant because the telephone number provided the police with information for checking the address of the defendant. Williams further emphasized that we must read applications for search warrants with common sense and pay deference to the magistrate’s determination of probable cause. See also, Commonwealth v. DeLuca, 230 Pa. Superior Ct. 390, 326 A.2d 463 (1974).
We find nothing magical about a telephone number. What is important is that the affidavit set forth sufficient circumstances to show that the informant is reliable and that his belief that illegal activity is going on is substantiated. Aguilar v. Texas, supra. Here, the reliability of the informant is clearly established. Moreover, the informant’s detailed knowledge of defendant and how the lottery operated, as well as Officer Zelen’s surveillance of the apartment and observation on several occasions of the placing of bets with defendant by this reliable informant constitute sufficient circumstances to support the informant’s belief that an illegal lottery was being operated out of defendant’s apartment.
Order reversed.