diff --git a/Cronitor/Clients/TelemetriesClient.cs b/Cronitor/Clients/TelemetriesClient.cs
index 9b2df0b..12a6564 100644
--- a/Cronitor/Clients/TelemetriesClient.cs
+++ b/Cronitor/Clients/TelemetriesClient.cs
@@ -3,8 +3,6 @@
 using Cronitor.Commands;
 using Cronitor.Constants;
 using Cronitor.Internals;
-using System;
-using System.Diagnostics;
 using System.Threading.Tasks;
 
 namespace Cronitor.Clients
@@ -35,11 +33,13 @@ public TelemetriesClient()
         public TelemetriesClient(string apiKey)
             : base(Urls.DefaultApiUrl, apiKey)
         {
+            _apiKey = apiKey;
         }
 
         public TelemetriesClient(string apiKey, JsonSerializerOptions jsonSerializerOptions)
             : base(Urls.DefaultApiUrl, apiKey, jsonSerializerOptions)
         {
+            _apiKey = apiKey;
         }
 
         internal TelemetriesClient(string apiKey, HttpClient client)