diff --git a/README.md b/README.md
index 64449a8..1eafb60 100644
--- a/README.md
+++ b/README.md
@@ -129,7 +129,7 @@ cp .env.example .env          # set bitcoind RPC credentials
 make up                       # build images + start ckpool + api
 ```
 
-The dashboard is at `http://localhost:8080`. Point a miner at `stratum+tcp://localhost:3333` with a Bitcoin address as the username.
+The dashboard is at `http://localhost:8080`. Point a miner at `stratum+tcp://localhost:3333` with a valid Bitcoin address as the username.
 
 ### Make Targets