diff --git a/apps/web/src/app/billing/clients/preview-invoice.client.ts b/apps/web/src/app/billing/clients/preview-invoice.client.ts
index 65ed78315d2..20d3d1c407f 100644
--- a/apps/web/src/app/billing/clients/preview-invoice.client.ts
+++ b/apps/web/src/app/billing/clients/preview-invoice.client.ts
@@ -21,6 +21,7 @@ export class ProrationPreviewResponse extends BaseResponse {
   tax: number;
   total: number;
   credit: number;
+  proratedAmountOfMonths: number;
 
   constructor(response: any) {
     super(response);
@@ -28,6 +29,7 @@ export class ProrationPreviewResponse extends BaseResponse {
     this.tax = this.getResponseProperty("Tax");
     this.total = this.getResponseProperty("Total");
     this.credit = this.getResponseProperty("Credit");
+    this.proratedAmountOfMonths = this.getResponseProperty("ProratedAmountOfMonths");
   }
 }