diff --git a/vala/abstract_class/simple_class.vala b/vala/abstract_class/simple_class.vala
index 342d143..c4a7fe4 100644
--- a/vala/abstract_class/simple_class.vala
+++ b/vala/abstract_class/simple_class.vala
@@ -1,15 +1,17 @@
-public abstract class Animal : Object {
+public class Animal : Object {
 
     public void eat() {
         stdout.printf("*chomp chomp*\n");
     }
 
-    public abstract void say_hello();
+    public void say_hello() {
+      stdout.printf ("parent hello\n");
+    }
 }
 
 public class Tiger : Animal {
 
-    public override void say_hello() {
+    public void say_hello_2() {
         stdout.printf("*roar*\n");
     }
 }