diff --git a/src/main/kotlin/com/petqua/presentation/order/dto/OrderDtos.kt b/src/main/kotlin/com/petqua/presentation/order/dto/OrderDtos.kt
index c81e6225..9807c37d 100644
--- a/src/main/kotlin/com/petqua/presentation/order/dto/OrderDtos.kt
+++ b/src/main/kotlin/com/petqua/presentation/order/dto/OrderDtos.kt
@@ -300,7 +300,7 @@ data class OrderReadRequest(
     val limit: Int = PAGING_LIMIT_CEILING,
 
     @Schema(
-        description = "마지막으로 조회한 주문 번호. 없을 경우 null",
+        description = "마지막으로 조회한 주문 번호. 없을 경우 EMPTY",
         example = "20210901000001"
     )
     val lastViewedOrderNumber: String,
diff --git a/src/test/kotlin/com/petqua/presentation/order/OrderControllerSteps.kt b/src/test/kotlin/com/petqua/presentation/order/OrderControllerSteps.kt
index 695a8731..94e6943b 100644
--- a/src/test/kotlin/com/petqua/presentation/order/OrderControllerSteps.kt
+++ b/src/test/kotlin/com/petqua/presentation/order/OrderControllerSteps.kt
@@ -72,9 +72,11 @@ fun requestReadOrders(
     return Given {
         log().all()
         auth().preemptive().oauth2(accessToken)
-            .queryParams("lastViewedId", request.lastViewedId)
-            .queryParams("limit", request.limit)
-            .queryParams("lastViewedOrderNumber", request.lastViewedOrderNumber)
+            .params(
+                "lastViewedId", request.lastViewedId,
+                "limit", request.limit,
+                "lastViewedOrderNumber", request.lastViewedOrderNumber,
+            )
     } When {
         get("/orders")
     } Then {