diff --git a/README.md b/README.md
index 20c43fa..0cf284c 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ These inputs are *all optional*. If not set, sensible default values will be use
 | `team-reviewers` | A comma separated list of GitHub teams to request a review from. | none |
 | `milestone` | The number of the milestone to associate this pull request with. | none |
 | `branch` | The branch name. See **Branch naming** below for details. | `create-pull-request/patch` |
-| `base` | Sets the pull request base branch. | Defaults to the currently checked out branch specified by `GITHUB_REF`. In the case of `pull_request` events, `GITHUB_HEAD_REF` |
+| `base` | Sets the pull request base branch. | Defaults to the currently checked out branch, `GITHUB_REF`. For `pull_request` events, `GITHUB_HEAD_REF` |
 | `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` |
 
 **Outputs**