diff --git a/app/ceph.py b/app/ceph.py
index 9fccce1..16f8179 100644
--- a/app/ceph.py
+++ b/app/ceph.py
@@ -18,6 +18,6 @@ def setup(ceph_url, ssh_username):
     except Exception:
         p = subprocess.check_output(f"ssh-keyscan {ceph_url}".split())
         keys = p.decode("utf-8").strip().split("\n")
-        print(keys)
+        keys = "\n".join(keys)
         with open(os.path.expanduser("~/.ssh/known_hosts"), "a") as known_hosts:
-                known_hosts.writelines(keys)
\ No newline at end of file
+                known_hosts.write(keys)
\ No newline at end of file