diff --git a/packages/scandipwa/src/route/Checkout/Checkout.container.tsx b/packages/scandipwa/src/route/Checkout/Checkout.container.tsx
index 5c89d1c4f4..addbfc898a 100644
--- a/packages/scandipwa/src/route/Checkout/Checkout.container.tsx
+++ b/packages/scandipwa/src/route/Checkout/Checkout.container.tsx
@@ -415,7 +415,7 @@ export class CheckoutContainer extends PureComponent<CheckoutContainerProps, Che
         this.setState({ selectedShippingMethod: method_code });
     }
 
-    onShippingEstimationFieldsChange(address: GQLEstimateShippingCostsAddress) {
+    onShippingEstimationFieldsChange(address: GQLEstimateShippingCostsAddress): void {
         const cartId = getCartId();
 
         if (!cartId) {