diff --git a/README.md b/README.md
index 1ce8eb2..b6483ca 100644
--- a/README.md
+++ b/README.md
@@ -260,7 +260,7 @@ if (parser.parse("...", ast)) {
 
 `peg::AstOptimizer` removes redundant nodes to make a AST simpler. You can make your own AST optimizers to fit your needs.
 
-See actual usages in the [AST calculator example](https://github.com/yhirose/cpp-peglib/blob/master/example/calc3.cc) and [PL/0 language example](https://github.com/yhirose/cpp-peglib/blob/master/language/pl0/pl0.cc).
+See actual usages in the [AST calculator example](https://github.com/yhirose/cpp-peglib/blob/master/example/calc3.cc) and [PL/0 language example](https://github.com/yhirose/cpp-peglib/blob/master/pl0/pl0.cc).
 
 Simple interface
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