diff --git a/src/models/Donation.ts b/src/models/Donation.ts
index 82897c8..3ccdafc 100644
--- a/src/models/Donation.ts
+++ b/src/models/Donation.ts
@@ -29,9 +29,8 @@ export abstract class Donation {
 
   /**
    * The donation's amount in cents (or whatever your currency's smallest unit is.).
+   * The exact implementation may differ for each type of donation.
    */
-  @Column()
   @IsInt()
-  @IsPositive()
   amount: number;
 }
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