diff --git a/sort_known_hosts.py b/sort_known_hosts.py
index 509fc74..da032b2 100755
--- a/sort_known_hosts.py
+++ b/sort_known_hosts.py
@@ -66,9 +66,9 @@ def main(args):
             str,
             sorted(
                 compactEntryList,
-                key=lambda entry: entry.host[1:]
-                if entry.host.startswith('[')
-                else entry.host,
+                key=lambda entry: (
+                    entry.host[1:] if entry.host.startswith('[') else entry.host
+                ),
             ),
         )
     )