diff --git a/docs/installation/index.md b/docs/installation/index.md
index 0037b61e..dd8c18f3 100644
--- a/docs/installation/index.md
+++ b/docs/installation/index.md
@@ -29,4 +29,4 @@ You have a few options for deploying homepage, depending on your needs. We offer
 
 ### `HOMEPAGE_ALLOWED_HOSTS`
 
-As of v1.0 there is one required environment variable when deploying via a public URL, <code>HOMEPAGE_ALLOWED_HOSTS</code>. This is a comma separated list of allowed hosts (sometimes with the port) that can access your homepage. See the [docker](docker.md) and [source](source.md) installation pages for examples.
+As of v1.0 there is one required environment variable when deploying via a public URL, <code>HOMEPAGE_ALLOWED_HOSTS</code>. This is a comma separated (no spaces) list of allowed hosts (sometimes with the port) that can access your homepage. See the [docker](docker.md) and [source](source.md) installation pages for examples.