diff --git a/README.md b/README.md
index e2e6cfb..a887a21 100644
--- a/README.md
+++ b/README.md
@@ -67,7 +67,7 @@ Load all environments from file.
 ```bash
 docker run --rm \
   -e ENV_FILE=your_env_file_path \
-  -e PLUGIN_KEY="$(cat ${HOME}/.ssh/id_rsa)"
+  -e PLUGIN_KEY="$(cat ${HOME}/.ssh/id_rsa)" \
   -v $(pwd):$(pwd) \
   -w $(pwd) \
   appleboy/drone-scp
diff --git a/plugin.go b/plugin.go
index 041f0df..778a68a 100644
--- a/plugin.go
+++ b/plugin.go
@@ -83,7 +83,6 @@ func (p Plugin) Exec() error {
 	}
 
 	files := trimPath(p.Config.Source)
-	src := strings.Join(files, " ")
 	dest := fmt.Sprintf("%s-%s.tar", p.Repo.Name, p.Build.Commit[:7])
 
 	// create a temporary file for the archive
@@ -95,7 +94,8 @@ func (p Plugin) Exec() error {
 
 	// run archive command
 	log.Println("tar all files into " + tar)
-	cmd := exec.Command("tar", "-cf", tar, src)
+	args := append(append([]string{}, "-cf", tar), files...)
+	cmd := exec.Command("tar", args...)
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	if err := cmd.Run(); err != nil {