Background: Surgery is the most efficient treatment to achalasia of the esophagus with a success rate estimated 90%. Laparoscopic myotomy is combined with a fundoplication. One of the most common types of wrap is the anterior partial fundoplication, also known as Dor fundoplication. The 10% of surgical failure has been attributed to incomplete myotomy and/or tight fundoplication. The present study describes a modified anterior partial fundoplication that may have the potential to improve the clinical outcome of surgical treatment for achalasia.Methods: In this prospective study, we describe a modification of the standardized technique of Dor fundoplication applied to twenty-nine achalasia patients with intention to decrease the rates of failure. Short-term clinical result was evaluated with preoperative and six- months postoperative Eckardt scores (ES).Results: The mean number of months from initial symptoms to the time of diagnosis was 35.5 months (range 3-156 months). According to the Chicago Classification (CC v3.0), 11 patients (37.9%) were classified as achalasia type I, 17 (58.6%) as type II and 1 (3.4%) as type III. The mean ES was diminished from 7.8 to 0.6 postoperatively.Conclusions: The modification proposed in the present study omits the fixation of the right side of the myotomy to the right crus. This alteration may have the potential to anatomically and functionally affect postoperative rates of dysphagia and antireflux result among patients surgically treated for achalasia.