diff --git a/AUTHORS.md b/AUTHORS.md
index 051c59e61..182081e94 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -127,6 +127,7 @@ Authors
 * [Joubin Jabbari](https://github.com/joubin)
 * [Juho Juopperi](https://github.com/jkjuopperi)
 * [Kane York](https://github.com/riking)
+* [Kenichi Maehashi](https://github.com/kmaehashi)
 * [Kenneth Skovhede](https://github.com/kenkendk)
 * [Kevin Burke](https://github.com/kevinburke)
 * [Kevin London](https://github.com/kevinlondon)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c0143d01..ea0d316ba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,7 +14,7 @@ Certbot adheres to [Semantic Versioning](https://semver.org/).
 
 ### Fixed
 
-*
+* Fixed OS detection in the Apache plugin on RHEL 6.
 
 More details about these changes can be found on our GitHub repo.
 
diff --git a/certbot-apache/certbot_apache/entrypoint.py b/certbot-apache/certbot_apache/entrypoint.py
index 0b875add3..610191fea 100644
--- a/certbot-apache/certbot_apache/entrypoint.py
+++ b/certbot-apache/certbot_apache/entrypoint.py
@@ -24,6 +24,7 @@ OVERRIDE_CLASSES = {
     "fedora_old": override_centos.CentOSConfigurator,
     "fedora": override_fedora.FedoraConfigurator,
     "ol": override_centos.CentOSConfigurator,
+    "redhatenterpriseserver": override_centos.CentOSConfigurator,
     "red hat enterprise linux server": override_centos.CentOSConfigurator,
     "rhel": override_centos.CentOSConfigurator,
     "amazon": override_centos.CentOSConfigurator,