diff --git a/README.md b/README.md
index 3f897b8..425058d 100644
--- a/README.md
+++ b/README.md
@@ -45,11 +45,11 @@ These variables are *all optional*. If not set, sensible default values will be
 | `COMMIT_AUTHOR_NAME` | The name of the commit author. | For `push` events, the HEAD commit author. Otherwise, <GITHUB_ACTOR>, the GitHub user that initiated the event. |
 | `PULL_REQUEST_TITLE` | The title of the pull request. | `Auto-generated by create-pull-request action` |
 | `PULL_REQUEST_BODY` | The body of the pull request. | `Auto-generated pull request by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub Action` |
-| `PULL_REQUEST_LABELS` | A comma separated list of labels. | `none` |
-| `PULL_REQUEST_ASSIGNEES` | A comma separated list of assignees (GitHub usernames). | `none` |
-| `PULL_REQUEST_REVIEWERS` | A comma separated list of reviewers (GitHub usernames) to request a review from. | `none` |
-| `PULL_REQUEST_TEAM_REVIEWERS` | A comma separated list of GitHub teams to request a review from. | `none` |
-| `PULL_REQUEST_MILESTONE` | The number of the milestone to associate this pull request with. | `none` |
+| `PULL_REQUEST_LABELS` | A comma separated list of labels. | none |
+| `PULL_REQUEST_ASSIGNEES` | A comma separated list of assignees (GitHub usernames). | none |
+| `PULL_REQUEST_REVIEWERS` | A comma separated list of reviewers (GitHub usernames) to request a review from. | none |
+| `PULL_REQUEST_TEAM_REVIEWERS` | A comma separated list of GitHub teams to request a review from. | none |
+| `PULL_REQUEST_MILESTONE` | The number of the milestone to associate this pull request with. | none |
 | `PULL_REQUEST_BRANCH` | The branch name. See **Branch naming** below for details. | `create-pull-request/patch` |
 | `BRANCH_SUFFIX` | The branch suffix type. Valid values are `short-commit-hash`, `timestamp`, `random` and `none`. See **Branch naming** below for details. | `short-commit-hash` |