diff --git a/daemon.go b/daemon.go
index 2adae73..487843b 100644
--- a/daemon.go
+++ b/daemon.go
@@ -5,6 +5,7 @@ package docker
 import (
 	"io/ioutil"
 	"os"
+	"os/exec"
 )
 
 const dockerExe = "/usr/local/bin/docker"