Sole proprietors of a construction maintenance company appeal the dismissal of their suit against a subcontractor, alleging that the subcontractor improperly filed a lien on the company's property, and unreasonably refused to cancel the lien when requested to do so. Because the refusal to cancel the lien was not unreasonable, we affirm the judgment of the district court.
I. FACTS AND PROCEEDINGS
Louisiana residents George and Jane Pipes (“the Pipes”) own and operate Pipes Industrial, a sole proprietorship specializing in mechanical maintenance of industrial plants. In the spring of 2001, while Pipes Industrial was in a Chapter 13 bankruptcy proceeding, Dyna Ten Corporation (“Dyna Ten”) began a business relationship with the Pipes. After negotiations, the Pipes and Dyna Ten entered into an arrangement whereby Dyna Ten performed services for the Pipes’s largest client, Willamette Industries (“Willamette”), on the Pipes’s behalf. As part of the agreement, the Pipes promised to pay Dyna Ten for those services.
Over a period of two months in mid-2001, Dyna Ten performed work on Willamette job sites. Despite their agreement, the Pipes failed to pay Dyna Ten for the work.1 In August 2001, as a result of the Pipes’s failure to compensate for the rendered services, Dyna Ten filed a lien pursuant to the Louisiana Private Works Act. Almost four months later, the Pipes, in a letter to Tracy Houck, an attorney representing Dyna Ten for claims stemming from the Pipes’s bankruptcy, requested that Dyna Ten rescind the lien. Dyna Ten refused; in response, the Pipes filed an adversary action against Dyna Ten, claiming that the lien was fraudulently filed and invalid. Further, the Pipes sought damages for Dyna Ten’s allegedly improper refusal to cancel the lien after the Pipes requested that they do so.
The magistrate judge recommended that the Pipes’s motion for summary judgment be granted in part, finding that there were technical defects in Dyna Ten’s lien. The magistrate judge recommended, however, that the Pipes’s lawsuit be dismissed for two reasons: first, a proper cancellation request was not made by the Pipes, and second, Dyna Ten had a reasonable and non-malicious basis for the lien despite its technical deficiencies. The district court followed these recommendations in full, and dismissed the action. This appeal follows.
II. DISCUSSION
We review a district court’s grant of summary judgment de novo. See Arguello v. Conoco, Inc., 207 F.3d 803, 807 (5th Cir.2000). Summary judgment is *490proper if, after taking all inferences most favorable to the non-movant, there are no genuine issues of material fact and the moving party is entitled to a judgment as a matter of law. Id.
A. The Pipes made a proper request for lien cancellation.
The Pipes argue that Dyna Ten unreasonably refused to cancel the lien after being requested to do so in violation of Louisiana law. Louisiana statute § 9:4833 states that “an owner or other interested person may require the person who has filed [the lien] ... to cancel the statement of claim.” La.Rev.Stat. ANN. § 9:4833(A) (West 1991). If the lienholder refuses to cancel the lien “without reasonable cause,” he “shall be liable for damages suffered by the owner or person requesting the [cancellation].” § 9:4833(B).
Dyna Ten argues that Pipes’s request was improper because it was not sent to the address and agent described in the lien. Section 4833 does not state whom should receive the request for cancellation where, as here, the lienholder is a corporation. Section 4842, however, is incorporated into § 4833 by the comment and states that “notice required or permitted to be given in this Part ... may be addressed to an owner, contractor, or surety at the address given in a notice of contract.” § 4842 (emphasis added). Louisiana courts have interpreted this section as being permissive, and that a request is not limited to the listed agents. Frey Plumbing Co., v. Cmty. Care, L.L.C., 817 So.2d 395, 397 (La.App. 4 Cir.2002) (“It is axiomatic in statutory construction matters that the word ‘may’ is permissive. It is quite clear to us that [plaintiff] was free to use another address.”). Dyna Ten eon-cedes that the Pipes sent the request to Houck, an attorney representing Dyna Ten in the Pipes Industrial-Willamette-Dyna Ten bankruptcy negotiations. The Pipes’s request sent to an attorney actively involved with the legal affairs of Dyna Ten, given the permissive nature of § 4842, was proper.2
B. Dyna Ten’s refusal to cancel the lien was not unreasonable.
Even though we find notice proper, the Pipes are not entitled to damages unless Dyna Ten refused the request “without reasonable cause.” LaRev.Stat. § 4833. A lien based on a substantial sum of owed money, even if not properly perfected, is not unreasonable under Louisiana case law. See Mayeaux v. McInnis, 809 So.2d 310, 313 (La.App. 1st Cir.2001). Although the amount is contested, the Pipes do not dispute that they owe some amount of money to Dyna Ten. Therefore, the cases on which the Pipes rely, LeMoyne-Clegg Dev. Corp. v. Bonfanti-Fackrell, Ltd., 509 So.2d 43 (La.App. 1 Cir.1987) and Ducote v. Voinche, 820 So.2d 656 (La.App. 3d Cir.2002), are inapposite. In LeMoyne-Clegg, the Louisiana appellate court explicitly noted that “at the time defendant filed the lien against plaintiffs property, the defendant knew that the sum of $252,092.78 was not due and owing." 509 So.2d at 46 (emphasis added). Similarly, the Ducote court ruled that “[t]he lien was improperly filed.... No money was due.” 820 So.2d at 659 (emphasis added). Louisiana law is clear: a refusal to cancel a lien is not unreasonable where, as here, there is a sum of money owed to the lienholder.
*491III. CONCLUSION
For the foregoing reasons, we AFFIRM the judgment of the district court.3