diff --git a/src/main/java/de/mrbesen/telegram/MessageBuilder.java b/src/main/java/de/mrbesen/telegram/MessageBuilder.java
index 9696022..d368388 100644
--- a/src/main/java/de/mrbesen/telegram/MessageBuilder.java
+++ b/src/main/java/de/mrbesen/telegram/MessageBuilder.java
@@ -6,6 +6,7 @@ import java.net.URLEncoder;
 import de.mrbesen.telegram.AsyncHandler.Callback;
 import de.mrbesen.telegram.objects.TMessage;
 import de.mrbesen.telegram.objects.TReplyMarkup;
+import de.mrbesen.telegram.objects.TUser;
 
 public class MessageBuilder {
 
@@ -28,6 +29,11 @@ public class MessageBuilder {
 		reciver_id = id;
 		return this;
 	}
+
+	public MessageBuilder setReciver(TUser user) {
+		reciver_id = user.getID();
+		return this;
+	}
 	
 	public MessageBuilder setText(String txt) {
 		txt = txt.trim();
@@ -229,4 +235,5 @@ public class MessageBuilder {
 		}
 	}
 
+
 }
diff --git a/src/main/java/de/mrbesen/telegram/TelegramAPI.java b/src/main/java/de/mrbesen/telegram/TelegramAPI.java
index 4cfcfc6..11a811d 100644
--- a/src/main/java/de/mrbesen/telegram/TelegramAPI.java
+++ b/src/main/java/de/mrbesen/telegram/TelegramAPI.java
@@ -80,7 +80,7 @@ public class TelegramAPI implements Runnable {
 
 	public TelegramAPI(String apikey) {
 		if (!apikey.matches(TOKENREGEX) ) {
-			throw new IllegalArgumentException("Invalid API key");
+			throw new IllegalArgumentException("Invalid API key: " + apikey);
 		}
 		this.apikey = apikey;
 	}