diff --git a/src/main/java/de/maishai/ExpressionGenerator.java b/src/main/java/de/maishai/ExpressionGenerator.java
index d5d87cb..3701aec 100644
--- a/src/main/java/de/maishai/ExpressionGenerator.java
+++ b/src/main/java/de/maishai/ExpressionGenerator.java
@@ -106,9 +106,11 @@ public class ExpressionGenerator extends DecafBaseVisitor<Expression> {
     public Expression visitNew(DecafParser.NewContext ctx) {
         Type type = ASTGenerator.getType(ctx.type());
         List<Expression> args = new ArrayList<>();
-        for (var expr : ctx.args().expr()) {
-            Expression astExpr = expr.accept(this);
-            args.add(astExpr);
+        if (ctx.args() != null) {
+            for (var expr : ctx.args().expr()) {
+                Expression astExpr = expr.accept(this);
+                args.add(astExpr);
+            }
         }
         return new New(type, args);
     }