diff --git a/libavcodec/mmaldec.c b/libavcodec/mmaldec.c
index f1bcaed0ff..b0140170f2 100644
--- a/libavcodec/mmaldec.c
+++ b/libavcodec/mmaldec.c
@@ -656,7 +656,7 @@ static int ffmal_copy_frame(AVCodecContext *avctx,  AVFrame *frame,
         av_image_fill_arrays(src, linesize,
                              buffer->data + buffer->type->video.offset[0],
                              avctx->pix_fmt, w, h, 1);
-        av_image_copy(frame->data, frame->linesize, src, linesize,
+        av_image_copy(frame->data, frame->linesize, (const uint8_t **)src, linesize,
                       avctx->pix_fmt, avctx->width, avctx->height);
     }