1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/mjpegbdec.c b/libavcodec/mjpegbdec.c
index 93f6923cd5..0f27379f30 100644
--- a/libavcodec/mjpegbdec.c
+++ b/libavcodec/mjpegbdec.c
@@ -31,10 +31,10 @@
 
 static int mjpegb_decode_frame(AVCodecContext *avctx,
                               void *data, int *data_size,
-                              uint8_t *buf, int buf_size)
+                              const uint8_t *buf, int buf_size)
 {
     MJpegDecodeContext *s = avctx->priv_data;
-    uint8_t *buf_end, *buf_ptr;
+    const uint8_t *buf_end, *buf_ptr;
     AVFrame *picture = data;
     GetBitContext hgb; /* for the header */
     uint32_t dqt_offs, dht_offs, sof_offs, sos_offs, second_field_offs;