diff --git a/README.md b/README.md
index ea30e20..e6ceee2 100644
--- a/README.md
+++ b/README.md
@@ -29,28 +29,19 @@ docker run --rm --privileged --volume .:/isogenerator/output -e VERSION=39 -e IM
 ## Customizing
 The following variables can be used to customize the create image.
 
-- ARCH  
-    Architecture for image to build  
-    Default Value: x86_64
-- VERSION  
-    Fedora version of installer to build  
-    Default Value: 39
-- IMAGE_REPO  
-    Repository containing the source container image  
-    Default Value: ghcr.io/ublue-os
-- IMAGE_NAME  
-    Name of the source container image  
-    Default Value: base-main
-- IMAGE_TAG  
-    Tag of the source container image  
-    Default Value: *VERSION*
-- VARIANT  
-    Source container variant
-    Available options can be found by running `dnf provides system-release`. Variant will be the third item in the package name. Example: `fedora-release-kinoite-39-34.noarch` will be kinonite  
-    Default Value: Silverblue
-- WEB_UI  
-    Enable Anaconda WebUI  
-    Default Value: false
+| Variable          | Description                                              | Default Value          |
+| ----------------- | -------------------------------------------------------- | ---------------------- |
+| ARCH              | Architecture for image to build                          | x86_64                 |
+| VERSION           | Fedora version of installer to build                     | 39                     |
+| IMAGE_REPO        | Repository containing the source container image         | ghcr.io/ublue-os       |
+| IMAGE_NAME        | Name of the source container image                       | base-main              |
+| IMAGE_TAG         | Tag of the source container image                        | *VERSION*              |
+| EXTRA_BOOT_PARAMS | Extra params used by grub to boot the anaconda installer | \[empty\]              |
+| VARIANT           | Source container variant\*                               | Kinoite                |
+| WEB_UI            | Enable Anaconda WebUI (experimental)                     | false                  |
+
+Available options for VARIANT can be found by running `dnf provides system-release`. 
+Variant will be the third item in the package name. Example: `fedora-release-kinoite-39-34.noarch` will be kinoite
 
 ## VSCode Dev Container
 There is a dev container configuration provided for development. By default it will use the existing container image available at `ghcr.io/ublue-os/isogenerator`, however, you can have it build a new image by editing `.devcontainer/devcontainer.json` and replacing `image` with `build`. `Ctrl+/` can be used to comment and uncomment blocks of code within VSCode.
diff --git a/action.yml b/action.yml
index c422201..83438cd 100644
--- a/action.yml
+++ b/action.yml
@@ -106,7 +106,7 @@ runs:
           IMAGE_TAG=${{ inputs.IMAGE_TAG || inputs.VERSION }} \
           VARIANT=${{ inputs.VARIANT }} \
           VERSION=${{ inputs.VERSION }} \
-          WEB_UI=${{ inputs.WEB_UI }}
+          WEB_UI=${{ inputs.WEB_UI }} \
           EXTRA_BOOT_PARAMS=${{ inputs.EXTRA_BOOT_PARAMS }}
 
     - name: Create deploy.iso and generate sha256 checksum