diff --git a/libavcodec/proresdec.c b/libavcodec/proresdec.c
index 207fd9742e..8ca5f3d632 100644
--- a/libavcodec/proresdec.c
+++ b/libavcodec/proresdec.c
@@ -289,7 +289,7 @@ static int decode_picture_header(ProresContext *ctx, const uint8_t *buf,
 /**
  * Read an unsigned rice/exp golomb codeword.
  */
-static inline int decode_vlc_codeword(GetBitContext *gb, uint8_t codebook)
+static inline int decode_vlc_codeword(GetBitContext *gb, unsigned codebook)
 {
     unsigned int rice_order, exp_order, switch_bits;
     unsigned int buf, code;
diff --git a/libavcodec/proresenc.c b/libavcodec/proresenc.c
index 7e3e066875..aa96b35e75 100644
--- a/libavcodec/proresenc.c
+++ b/libavcodec/proresenc.c
@@ -229,7 +229,7 @@ static void get_slice_data(ProresContext *ctx, const uint16_t *src,
 /**
  * Write an unsigned rice/exp golomb codeword.
  */
-static inline void encode_vlc_codeword(PutBitContext *pb, uint8_t codebook, int val)
+static inline void encode_vlc_codeword(PutBitContext *pb, unsigned codebook, int val)
 {
     unsigned int rice_order, exp_order, switch_bits, switch_val;
     int exponent;
@@ -393,7 +393,7 @@ static int encode_slice(AVCodecContext *avctx, const AVFrame *pic,
     return total_size;
 }
 
-static inline int estimate_vlc(uint8_t codebook, int val)
+static inline int estimate_vlc(unsigned codebook, int val)
 {
     unsigned int rice_order, exp_order, switch_bits, switch_val;
     int exponent;