diff --git a/libavcodec/r210enc.c b/libavcodec/r210enc.c
index cfe433e8ff..1d924cc77c 100644
--- a/libavcodec/r210enc.c
+++ b/libavcodec/r210enc.c
@@ -68,7 +68,7 @@ static int encode_frame(AVCodecContext *avctx, uint8_t *buf,
             else
                 bytestream_put_be32(&dst, pixel);
         }
-        dst += aligned_width - avctx->width;
+        dst += (aligned_width - avctx->width) * 4;
         src_line += pic->linesize[0];
     }