The McGurk effect was investigated in a group of ten-year-old dyslexic children and in two control groups of normal readers. Audio, video, and audio-visual stimuli were presented in silence or with a masking noise. In the audio-visual condition, the auditory information was presented either 160 ms before, or at the same time as, the visual information. For the incongruent audio-visual stimuli, the dyslexics exhibited a smaller McGurk effect than did the normal readers of the same chronological age, but did not differ from the controls of the same reading age. The results indicated no significant differences between the three groups for the auditory stimuli. Taken together, the results suggest a developmental lag in dyslexics.