diff --git a/locales/en.json b/locales/en.json
index f5ceac24a..09a2422ca 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -274,7 +274,7 @@
     "domain_cannot_remove_main": "Cannot remove main domain. Set a new main domain first",
     "certmanager_self_ca_conf_file_not_found": "Configuration file not found for self-signing authority (file: {file:s})",
     "certmanager_acme_not_configured_for_domain": "Certificate for domain {domain:s} does not appear to be correctly installed. Please run cert-install for this domain first.",
-    "certmanager_http_check_timeout": "Timed out when server tried to contact itself through HTTP using public IP address (domain {domain:s} with ip {ip:s}). You may be experiencing hairpinning or the firewall/router ahead of your server is misconfigured.",
+    "certmanager_http_check_timeout": "Timed out when server tried to contact itself through HTTP using public IP address (domain {domain:s} with ip {ip:s}). You may be experiencing hairpinning issue or the firewall/router ahead of your server is misconfigured.",
     "certmanager_couldnt_fetch_intermediate_cert": "Timed out when trying to fetch intermediate certificate from Let's Encrypt. Certificate installation/renewal aborted - please try again later.",
     "certmanager_unable_to_parse_self_CA_name": "Unable to parse name of self-signing authority (file: {file:s})"
 }