diff --git a/Aufgabe3/ConsoleApplication1/Program.cs b/Aufgabe3/ConsoleApplication1/Program.cs
index e9d6e7d3077815e21d5d798deddb376c323e8a03..079df732dc4514828a29bd693f3e444ae5c40223 100644
--- a/Aufgabe3/ConsoleApplication1/Program.cs
+++ b/Aufgabe3/ConsoleApplication1/Program.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Net.Mime;
 using System.Runtime.CompilerServices;
 using System.Runtime.Remoting.Messaging;
@@ -29,6 +30,8 @@ namespace ConsoleApplication1
                 Console.WriteLine("Please provide two positive integers as program arguments");
                 Environment.Exit(1);
             }
+            
+            Debug.Assert(nrProd > -1 && nrCons > -1);