Fix broken link
diff --git a/cpp/cpptutorial.md b/cpp/cpptutorial.md
index 338e1e7..cd712fe 100644
--- a/cpp/cpptutorial.md
+++ b/cpp/cpptutorial.md
@@ -20,7 +20,7 @@
## Example code and setup
-The example code for our tutorial is in [grpc/grpc-common/cpp/route_guide](https://github.com/grpc/grpc-common/cpp/route_guide). To download the example, clone the `grpc-common` repository by running the following command:
+The example code for our tutorial is in [grpc/grpc-common/cpp/route_guide](https://github.com/grpc/grpc-common/tree/master/cpp/route_guide). To download the example, clone the `grpc-common` repository by running the following command:
```shell
$ git clone https://github.com/google/grpc-common.git
```