diff --git a/README.md b/README.md
index 1811330..b8e8b11 100644
--- a/README.md
+++ b/README.md
@@ -211,8 +211,8 @@ TLSharp library should automatically handle these errors. If you see such errors
 
 You should create a Telegram session. See [configuration guide](#sending-messages-set-up)
 
-#### Why I get FLOOD_WAIT error?
-[It's Telegram restrictions](https://core.telegram.org/api/errors#420-flood)
+#### Why do I get a FloodException/FLOOD_WAIT error?
+It's likely [Telegram restrictions](https://core.telegram.org/api/errors#420-flood), or a bug in TLSharp (if you feel it's the latter, please open a Github issue). You can know the time to wait by accessing the FloodException::TimeToWait property.
 
 #### Why does TLSharp lacks feature XXXX?
 
diff --git a/TLSharp.Core/Network/MtProtoSender.cs b/TLSharp.Core/Network/MtProtoSender.cs
index 8929760..9cb7061 100644
--- a/TLSharp.Core/Network/MtProtoSender.cs
+++ b/TLSharp.Core/Network/MtProtoSender.cs
@@ -272,8 +272,7 @@ namespace TLSharp.Core.Network
                 {
                     var resultString = Regex.Match(errorMessage, @"\d+").Value;
                     var seconds = int.Parse(resultString);
-                    Debug.WriteLine($"Should wait {seconds} sec.");
-                    Thread.Sleep(1000 * seconds);
+                    throw new FloodException(TimeSpan.FromSeconds(seconds));
                 }
                 else if (errorMessage.StartsWith("PHONE_MIGRATE_"))
                 {
@@ -499,6 +498,18 @@ namespace TLSharp.Core.Network
         }
     }
 
+    public class FloodException : Exception
+    {
+        public TimeSpan TimeToWait { get; private set; }
+
+        internal FloodException(TimeSpan timeToWait)
+            : base($"Flood prevention. Telegram now requires your program to do requests again only after {timeToWait.TotalSeconds} seconds have passed ({nameof(TimeToWait)} property)." +
+                    " If you think the culprit of this problem may lie in TLSharp's implementation, open a Github issue please.")
+        {
+            TimeToWait = timeToWait;
+        }
+    }
+
     internal abstract class DataCenterMigrationException : Exception
     {
         internal int DC { get; private set; }