diff --git a/webmin/lang/en b/webmin/lang/en
index 302ba7228..d859a8dc2 100644
--- a/webmin/lang/en
+++ b/webmin/lang/en
@@ -1146,7 +1146,7 @@ letsencrypt_echain=Failed to download chained certificate : $1
 letsencrypt_echain2=Chained certificate downloaded from $1 is empty
 letsencrypt_ecsr=Failed to generate CSR : $1
 letsencrypt_ekeygen=Failed to generate private key : $1
-letsencrypt_enative=The native Let's Encrypt client was used previously on this system, and must be used for all future certificate requests
+letsencrypt_enative=The native Let's Encrypt client (certbot) was used previously on this system, and must be used for all future certificate requests
 
 announce_hide=Hide This Announcement
 
diff --git a/webmin/letsencrypt-lib.pl b/webmin/letsencrypt-lib.pl
index ab3e102b7..78f180313 100755
--- a/webmin/letsencrypt-lib.pl
+++ b/webmin/letsencrypt-lib.pl
@@ -113,7 +113,7 @@ elsif ($mode eq "dns") {
 	# Make sure all the DNS zones exist
 	if ($wildcard && !$letsencrypt_cmd) {
 		return (0, "Wildcard hostname $wildcard can only be ".
-			   "validated when the native Let's Encrypt client ".
+			   "validated when the certbot Let's Encrypt client ".
 			   "is installed");
 		}
 	&foreign_require("bind8");