Inclusion Criteria:  American Spinal Injury Association (ASIA) impairment scale C or D Age between 18-70 years Onset of injury between 1-30 months Ability to walk at least 15 meters with or without walking aid  Exclusion Criteria:  Using other orthoses except the ankle-foot orthosis (AFO) Having musculoskeletal pain limiting their walking (pain score > 5/ 10) Modified Ashworth Scale (MAS) greater than 2 Having unstable cardiopulmonary disease Having uncontrolled conditions e.g. uncontrolled hypertension, uncontrolled diabetes Having a history of other neurological diseases e.g. stroke Having contra-indication to use tDCS which are The presence of intracranial metal implantation, cochlear implant, or cardiac pacemaker Having an open wound or wound infection on the scalp Having a history of brain surgery Having a history of seizure