diff --git a/doc/custom-build.md b/doc/custom-build.md
index 6e8470c7d3..9eeb2969a7 100644
--- a/doc/custom-build.md
+++ b/doc/custom-build.md
@@ -39,7 +39,7 @@ docker run -it -v ${pwd}:/build avivace/iosevka-build
 
 Fonts files will be placed in the `dist` folder.
 
-You can provide `private-build.plans.toml` for a customized build and/or specify the desired release appending `-e FONT_VERSION=X.X.X`. to the Docker command.
+You can provide `private-build-plans.toml` for a customized build (place it in your working directory when you run the `docker` command), and/or specify the desired release by appending `-e FONT_VERSION=X.X.X`. to the `docker` command.
 
 ## Customized Build