diff --git a/regress/unittests/hostkeys/testdata/known_hosts b/regress/unittests/hostkeys/testdata/known_hosts
index 4446f45dffe8..ca10b3cdeeb3 100644
--- a/regress/unittests/hostkeys/testdata/known_hosts
+++ b/regress/unittests/hostkeys/testdata/known_hosts
@@ -46,5 +46,5 @@ prometheus.example.com,192.0.2.1,2001:db8::1 ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAA
 sisyphus.example.com      
 prometheus.example.com ssh-ed25519 
 sisyphus.example.com ssh-dsa AAAATgAAAAdz
-sisyphus.example.com ssh-XXX AAAATgAAAAdzc2gtWFhYAAAAP0ZVQ0tPRkZGVUNLT0ZGRlVDS09GRkZVQ0tPRkZGVUNLT0ZGRlVDS09GRkZVQ0tPRkZGVUNLT0ZGRlVDS09GRg==
-prometheus.example.com ssh-rsa AAAATgAAAAdzc2gtWFhYAAAAP0ZVQ0tPRkZGVUNLT0ZGRlVDS09GRkZVQ0tPRkZGVUNLT0ZGRlVDS09GRkZVQ0tPRkZGVUNLT0ZGRlVDS09GRg==
+sisyphus.example.com ssh-XXX AAAATgAAAAdzc2gtWFhYAAAAP1BFUktFTEVQRVJLRUxFUEVSS0VMRVBFUktFTEVQRVJLRUxFUEVSS0VMRVBFUktFTEVQRVJLRUxFUEVSS0VMRQ==
+prometheus.example.com ssh-rsa AAAATgAAAAdzc2gtWFhYAAAAP1BFUktFTEVQRVJLRUxFUEVSS0VMRVBFUktFTEVQRVJLRUxFUEVSS0VMRVBFUktFTEVQRVJLRUxFUEVSS0VMRQ==