diff --git a/src/stores/quotations/types.ts b/src/stores/quotations/types.ts
index e05fae38..1b27be1a 100644
--- a/src/stores/quotations/types.ts
+++ b/src/stores/quotations/types.ts
@@ -293,7 +293,7 @@ export type QuotationPayload = {
     discount?: number;
     amount: number;
     product: ProductRelation;
-    installmentNo?: string;
+    installmentNo?: number;
     work?: WorkRelation | null;
     service?: ServiceRelation | null;
   }[];