diff --git a/import.js b/import.js
index faa6a04..b1f7662 100755
--- a/import.js
+++ b/import.js
@@ -15,7 +15,7 @@ if (!machine) {
     process.exit(1)
 }
 
-var machine = machine.substring(0, machine.length - 4)
+var machine = machine.replace(/\.[^.]*$/, '')
 var configDir = process.env.HOME + '/.docker/machine/machines/' + machine
 try {
     fs.statSync(configDir)