diff --git a/README.md b/README.md
index 5ca404c..3b07bd3 100644
--- a/README.md
+++ b/README.md
@@ -27,14 +27,14 @@ fn main() {
     let first_text = "one two three four".split(" ").collect::<Vec<&str>>();
     let second_text = "zero one tree four".split(" ").collect::<Vec<&str>>();
     let diff = difflib::unified_diff(&first_text, &second_text, "Original", "Current",
-             "2005-01-26 23:30:50", "2010-04-02 10:20:52", 3, "");
+             "2005-01-26 23:30:50", "2010-04-02 10:20:52", 3);
     for line in &diff {
         println!("{:?}", line);
     }
 
     //context_diff
     let diff = difflib::context_diff(&first_text, &second_text, "Original", "Current",
-             "2005-01-26 23:30:50", "2010-04-02 10:20:52", 3, "");
+             "2005-01-26 23:30:50", "2010-04-02 10:20:52", 3);
     for line in &diff {
         println!("{:?}", line);
     }