diff --git a/README.md b/README.md
index 8d361ecb..c1ff68ff 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ The `grunt` runner will accept three build options that will rewrite important v
  - staging: `$ grunt --staging`
  - production (the default): `$ grunt --production`
 
-These variables are configured in `build_configs.js`.
+These variables are configured in `build.config.js`.
 
 ---
 # Licence