diff --git a/TLSharp.Core/TelegramClient.cs b/TLSharp.Core/TelegramClient.cs
index 7b61e61..97f4ac8 100644
--- a/TLSharp.Core/TelegramClient.cs
+++ b/TLSharp.Core/TelegramClient.cs
@@ -18,13 +18,15 @@ namespace TLSharp.Core
         private MtProtoSender _sender;
         private AuthKey _key;
         private TcpTransport _transport;
-        private string _apiHash = "a2514f96431a228e4b9ee473f6c51945";
-        private int _apiId = 19474;
+        private string _apiHash = "";
+        private int _apiId = 0;
         private Session _session;
         private List<DcOption> dcOptions;
 
-        public TelegramClient(ISessionStore store, string sessionUserId)
+        public TelegramClient(ISessionStore store, string sessionUserId, string apiHash, int apiId)
         {
+            _apiHash = apiHash;
+            _apiId = apiId;
             if (_apiId == 0)
                 throw new InvalidOperationException("Your API_ID is invalid. Do a configuration first https://github.com/sochix/TLSharp#quick-configuration");
 
diff --git a/TLSharp.Tests/TLSharpTests.cs b/TLSharp.Tests/TLSharpTests.cs
index ecd564d..e0d1764 100644
--- a/TLSharp.Tests/TLSharpTests.cs
+++ b/TLSharp.Tests/TLSharpTests.cs
@@ -19,6 +19,10 @@ namespace TLSharp.Tests
 
         private string UserNameToSendMessage { get; set; }
 
+        private string apiHash = "";
+
+        private int apiId = 0;
+
         [TestInitialize]
         public void Init()
         {
@@ -41,7 +45,7 @@ namespace TLSharp.Tests
         public async Task AuthUser()
         {
             var store = new FileSessionStore();
-            var client = new TelegramClient(store, "session");
+            var client = new TelegramClient(store, "session", apiHash, apiId);
 
             await client.Connect();
 
@@ -57,7 +61,7 @@ namespace TLSharp.Tests
         public async Task CheckPhones()
         {
             var store = new FileSessionStore();
-            var client = new TelegramClient(store, "session");
+            var client = new TelegramClient(store, "session", apiHash, apiId);
             await client.Connect();
 
             var result = await client.IsPhoneRegistered(NumberToAuthenticate);
@@ -70,7 +74,7 @@ namespace TLSharp.Tests
             // User should be already authenticated!
 
             var store = new FileSessionStore();
-            var client = new TelegramClient(store, "session");
+            var client = new TelegramClient(store, "session", apiHash, apiId);
 
             await client.Connect();
 
@@ -85,7 +89,7 @@ namespace TLSharp.Tests
         public async Task ImportByUserName()
         {
             var store = new FileSessionStore();
-            var client = new TelegramClient(store, "session");
+            var client = new TelegramClient(store, "session", apiHash, apiId);
 
             await client.Connect();
 
@@ -100,7 +104,7 @@ namespace TLSharp.Tests
         public async Task ImportByUserNameAndSendMessage()
         {
             var store = new FileSessionStore();
-            var client = new TelegramClient(store, "session");
+            var client = new TelegramClient(store, "session", apiHash, apiId);
 
             await client.Connect();
 
@@ -119,7 +123,7 @@ namespace TLSharp.Tests
             // User should be already authenticated!
 
             var store = new FileSessionStore();
-            var client = new TelegramClient(store, "session");
+            var client = new TelegramClient(store, "session", apiHash, apiId);
             await client.Connect();
 
             Assert.IsTrue(client.IsUserAuthorized());
@@ -135,7 +139,7 @@ namespace TLSharp.Tests
         public async Task GetHistory()
         {
             var store = new FileSessionStore();
-            var client = new TelegramClient(store, "session");
+            var client = new TelegramClient(store, "session", apiHash, apiId);
             await client.Connect();
 
             Assert.IsTrue(client.IsUserAuthorized());
@@ -153,7 +157,7 @@ namespace TLSharp.Tests
         public async Task UploadAndSendMedia()
         {
             var store = new FileSessionStore();
-            var client = new TelegramClient(store, "session");
+            var client = new TelegramClient(store, "session", apiHash, apiId);
             await client.Connect();
 
             Assert.IsTrue(client.IsUserAuthorized());
@@ -178,7 +182,7 @@ namespace TLSharp.Tests
         public async Task TestConnection()
         {
             var store = new FakeSessionStore();
-            var client = new TelegramClient(store, "");
+            var client = new TelegramClient(store, "", apiHash, apiId);
 
             Assert.IsTrue(await client.Connect());
         }