diff --git a/parse_curl.go b/parse_curl.go
index f193901..9fdbef9 100644
--- a/parse_curl.go
+++ b/parse_curl.go
@@ -68,6 +68,10 @@ func (curl *CURL) CreateSession() *requests.Session {
 func (curl *CURL) CreateWorkflow(ses *requests.Session) *requests.Workflow {
 	var wf *requests.Workflow
 
+	if ses == nil {
+		ses = curl.CreateSession()
+	}
+
 	switch curl.Method {
 	case "HEAD":
 		wf = ses.Head(curl.ParsedURL.String())