diff --git a/src/ModernHttpClient/iOS/NSUrlSessionHandler.cs b/src/ModernHttpClient/iOS/NSUrlSessionHandler.cs
index cda825a..c25ede3 100644
--- a/src/ModernHttpClient/iOS/NSUrlSessionHandler.cs
+++ b/src/ModernHttpClient/iOS/NSUrlSessionHandler.cs
@@ -131,7 +131,7 @@ protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage
             };
 
             if (Timeout != null)
-                rq.TimeoutInterval = Timeout.Value.Seconds;
+                rq.TimeoutInterval = Timeout.Value.TotalSeconds;
 
             var op = session.CreateDataTask(rq);