1 files changed, 2 insertions, 2 deletions
diff --git a/sample/list3.rb b/sample/list3.rb
index 1d756fdff0..110e405cf9 100644
--- a/sample/list3.rb
+++ b/sample/list3.rb
@@ -7,11 +7,11 @@ class Point
     self
   end
 
-  def to_s
+  def inspect
     sprintf("%d@%d", @x, @y)
   end
 end
-    
+
 list1 = [10, 20, Point.new(2, 3), Point.new(4, 5)]
 list2 = [20, Point.new(4, 5), list1]
 print("list1: ", list1.inspect, "\n")