diff --git a/Trs80.Level1Basic.VirtualMachine/Interpreter/IInterpreter.cs b/Trs80.Level1Basic.VirtualMachine/Interpreter/IInterpreter.cs
index 06e63f0..3375cde 100644
--- a/Trs80.Level1Basic.VirtualMachine/Interpreter/IInterpreter.cs
+++ b/Trs80.Level1Basic.VirtualMachine/Interpreter/IInterpreter.cs
@@ -4,7 +4,7 @@
 
 namespace Trs80.Level1Basic.VirtualMachine.Interpreter;
 
-public interface IInterpreter : IExpressionVisitor<object>, IStatementVisitor<object>
+public interface IInterpreter : IExpressionVisitor, IStatementVisitor
 {
     Statement CurrentStatement { get; }
     void Interpret(ParsedLine line);
diff --git a/Trs80.Level1Basic.VirtualMachine/Interpreter/Interpreter.cs b/Trs80.Level1Basic.VirtualMachine/Interpreter/Interpreter.cs
index dde11fd..8114dca 100644
--- a/Trs80.Level1Basic.VirtualMachine/Interpreter/Interpreter.cs
+++ b/Trs80.Level1Basic.VirtualMachine/Interpreter/Interpreter.cs
@@ -226,7 +226,7 @@ private void WriteFloatValue(dynamic value)
             _sb.Append(value.ToString("######"));
     }
 
-    public sd VisitNextStatement(Next statement)
+    public void VisitNextStatement(Next statement)
     {
         ForCheckCondition checkCondition = GetCheckCondition(statement);
         dynamic nextIndexerValue = IncrementIndexer(checkCondition);