diff --git a/ClickHouse.Driver/ADO/ClickHouseCommand.cs b/ClickHouse.Driver/ADO/ClickHouseCommand.cs
index fc01535..e8a3765 100644
--- a/ClickHouse.Driver/ADO/ClickHouseCommand.cs
+++ b/ClickHouse.Driver/ADO/ClickHouseCommand.cs
@@ -259,11 +259,9 @@ private static QueryStats ExtractQueryStats(HttpResponseMessage response)
         try
         {
             const string summaryHeader = "X-ClickHouse-Summary";
-            if (response.Headers.Contains(summaryHeader))
+            if (response.Headers.TryGetValues(summaryHeader, out var values))
             {
-                var value = response.Headers.GetValues(summaryHeader).FirstOrDefault();
-                var jsonDoc = JsonDocument.Parse(value);
-                return JsonSerializer.Deserialize<QueryStats>(value, SummarySerializerOptions);
+                return JsonSerializer.Deserialize<QueryStats>(values.First(), SummarySerializerOptions);
             }
         }
         catch