diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index ada420a40..466355903 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -365,7 +365,7 @@ Please open an issue on `atom/atom` if you have suggestions for new labels, and
 | `blocked` | [search][search-atom-repo-label-blocked] | [search][search-atom-org-label-blocked] | Issues blocked on other issues. |
 | `duplicate` | [search][search-atom-repo-label-duplicate] | [search][search-atom-org-label-duplicate] | Issues which are duplicates of other issues, i.e. they have been reported before. |
 | `wontfix` | [search][search-atom-repo-label-wontfix] | [search][search-atom-org-label-wontfix] | The Atom core team has decided not to fix these issues for now, either because they're working as intended or for some other reason. |
-| `invalid` | [search][search-atom-repo-label-invalid] | [search][search-atom-org-label-invalid] | Issues which are't valid (e.g. user errors). |
+| `invalid` | [search][search-atom-repo-label-invalid] | [search][search-atom-org-label-invalid] | Issues which aren't valid (e.g. user errors). |
 | `package-idea` | [search][search-atom-repo-label-package-idea] | [search][search-atom-org-label-package-idea] | Feature request which might be good candidates for new packages, instead of extending Atom or core Atom packages. |
 | `wrong-repo` | [search][search-atom-repo-label-wrong-repo] | [search][search-atom-org-label-wrong-repo] | Issues reported on the wrong repository (e.g. a bug related to the [Settings View package](https://github.com/atom/settings-view) was reported on [Atom core](https://github.com/atom/atom)). |