diff --git a/common/ASC.Core.Common/Billing/CouponManager.cs b/common/ASC.Core.Common/Billing/CouponManager.cs
index b3b990122f..fc8bcd932c 100644
--- a/common/ASC.Core.Common/Billing/CouponManager.cs
+++ b/common/ASC.Core.Common/Billing/CouponManager.cs
@@ -154,7 +154,7 @@ namespace ASC.Core.Common.Billing
         private HttpClient PrepaireClient()
         {
             const string applicationJson = "application/json";
-            using var httpClient = new HttpClient { BaseAddress = BaseAddress, Timeout = TimeSpan.FromMinutes(3) };
+            var httpClient = new HttpClient { BaseAddress = BaseAddress, Timeout = TimeSpan.FromMinutes(3) };
             httpClient.DefaultRequestHeaders.TryAddWithoutValidation("accept", applicationJson);
             httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", applicationJson);
             httpClient.DefaultRequestHeaders.TryAddWithoutValidation("X-Avangate-Authentication", CreateAuthHeader());