diff --git a/ssh_runner.py b/ssh_runner.py
index 5cb26de..28996ab 100644
--- a/ssh_runner.py
+++ b/ssh_runner.py
@@ -55,8 +55,8 @@
 
 
 def parse_ssh_uri(uri):
-    # user:passwd@ip_host:port
-    # user:passwd@ip_host
+    # user:passwd@@ip_host:port
+    # user:passwd@@ip_host
     # user@ip_host:port
     # user@ip_host
     # ip_host:port
@@ -68,6 +68,8 @@
 
     res = ConnCreds()
     res.port = "22"
+    res.key_file = None
+    res.passwd = None
 
     for rr in uri_reg_exprs:
         rrm = re.match(rr, uri)