This study was an attempt to clarify and remind L2 learners/teachers of 2 kinds of writing: dicto-comp and dictation. We explored the effect of controlled writing on the accuracy of the writing of adult Iranian EFL learners. Prior to the study, the homogeneity of 30 adult EFL learners was checked through an OPT test. Thirty participants were assigned to 210 one-hour sessions: Group A via dicto-comp and Group B via dictation. Following this practice, the participants in both groups were asked to write texts as the posttest about similar topics to the one of the pretest. Results indicated that the participants working in the dictation wrote more accurately than those who wrote in dicto-comp format; however, but both dictation and dicto-comp had positive effects on the writing of the participants.