diff --git a/docs/dev/beginner-walkthrough.md b/docs/dev/beginner-walkthrough.md
index 886119552408b7be9818961f40888e1d8c1ddf9c..e3bb5678d93e461301ab228f41a4a6f20c3ce6ed 100644
--- a/docs/dev/beginner-walkthrough.md
+++ b/docs/dev/beginner-walkthrough.md
@@ -52,7 +52,7 @@ cargo build
 This will take about **2 minutes** to download dependencies plus between 5 and **15 minutes** to build in debug mode depending on the power of your processor. At this point, you built the *substrate client* (a kind of "shell" in which lies the runtime) and the default *runtime* itself. You can run a local blockchain with:
 
 ```bash
-cargo run -- --dev --tmp # here, --dev means --chain=gdev which selects the gdev runtime
+cargo run -- --dev --tmp # here, --dev means --chain=dev which selects the gdev runtime
 ```
 
 When you see the logs, the blockchain is running and you can connect to it with polkadotjs app: [https://polkadot.js.org/apps/?rpc=ws://127.0.0.1:9944](https://polkadot.js.org/apps/?rpc=ws%3A%2F%2F127.0.0.1%3A9944). You should see blocks being added every 6 seconds. You can use Alice, Bob, etc test accounts to submit extrinsics.