diff --git a/tests/src/test/java/com/maxio/advancedbilling/controllers/coupons/CouponsControllerCreateCouponTest.java b/tests/src/test/java/com/maxio/advancedbilling/controllers/coupons/CouponsControllerCreateCouponTest.java
index 73c7b1fd..4c3afdce 100644
--- a/tests/src/test/java/com/maxio/advancedbilling/controllers/coupons/CouponsControllerCreateCouponTest.java
+++ b/tests/src/test/java/com/maxio/advancedbilling/controllers/coupons/CouponsControllerCreateCouponTest.java
@@ -152,7 +152,7 @@ void shouldReturn422WhenBothPercentAndAmountInCentsSet() {
                         )
                 ))
                 .isUnprocessableEntity()
-                .hasErrors("Either a Discount Percentage or Amount must be specified, but not both",
+                .hasErrors("Either a Discount Percentage or an Amount must be specified, but not both.",
                         "Cannot create prices for a percentage-based coupon.");
     }