diff --git a/examples/dotnet/SpeakerSchedulingSat.cs b/examples/dotnet/SpeakerSchedulingSat.cs
index 451a5e0136..5fb99c31c9 100644
--- a/examples/dotnet/SpeakerSchedulingSat.cs
+++ b/examples/dotnet/SpeakerSchedulingSat.cs
@@ -184,9 +184,9 @@ class SpeakerScheduling
     public static void Main(String[] args)
     {
         int start = 1;
-        if (args.Length == 1)
+        if (args.Length >= 2)
         {
-            start = int.Parse(args[0]);
+            start = int.Parse(args[1]);
         }
         Stopwatch s = new Stopwatch();
         s.Start();
diff --git a/examples/dotnet/cstsp.cs b/examples/dotnet/cstsp.cs
index f62f53ae2d..67237fd67d 100644
--- a/examples/dotnet/cstsp.cs
+++ b/examples/dotnet/cstsp.cs
@@ -103,19 +103,19 @@ class Tsp
     public static void Main(String[] args)
     {
         int size = 10;
-        if (args.Length > 0)
-        {
-            size = Convert.ToInt32(args[0]);
-        }
-        int forbidden = 0;
         if (args.Length > 1)
         {
-            forbidden = Convert.ToInt32(args[1]);
+            size = Convert.ToInt32(args[1]);
         }
-        int seed = 0;
+        int forbidden = 0;
         if (args.Length > 2)
         {
-            seed = Convert.ToInt32(args[2]);
+            forbidden = Convert.ToInt32(args[2]);
+        }
+        int seed = 0;
+        if (args.Length > 3)
+        {
+            seed = Convert.ToInt32(args[3]);
         }
 
         Solve(size, forbidden, seed);
diff --git a/examples/dotnet/techtalk_scheduling.cs b/examples/dotnet/techtalk_scheduling.cs
index 39e1ca9a5e..aee8b0caae 100644
--- a/examples/dotnet/techtalk_scheduling.cs
+++ b/examples/dotnet/techtalk_scheduling.cs
@@ -268,9 +268,9 @@ public class SpeakerScheduling
     public static void Main(String[] args)
     {
         int start = 17;
-        if (args.Length == 1)
+        if (args.Length >= 2)
         {
-            start = int.Parse(args[0]);
+            start = int.Parse(args[1]);
         }
         Stopwatch s = new Stopwatch();
         s.Start();