diff --git a/src/ftp.lua b/src/ftp.lua
index ea1145b..917cd89 100644
--- a/src/ftp.lua
+++ b/src/ftp.lua
@@ -268,7 +268,7 @@ _M.command = socket.protect(function(cmdt)
     cmdt = override(cmdt)
     socket.try(cmdt.host, "missing hostname")
     socket.try(cmdt.command, "missing command")
-    local f = open(cmdt.host, cmdt.port, cmdt.create)
+    local f = _M.open(cmdt.host, cmdt.port, cmdt.create)
     f:greet()
     f:login(cmdt.user, cmdt.password)
     f.try(f.tp:command(cmdt.command, cmdt.argument))