diff --git a/libavcodec/me_cmp.c b/libavcodec/me_cmp.c
index db3fb1260c..670103cc05 100644
--- a/libavcodec/me_cmp.c
+++ b/libavcodec/me_cmp.c
@@ -751,7 +751,7 @@ static int quant_psnr8x8_c(MpegEncContext *s, const uint8_t *src1,
     memcpy(bak, temp, 64 * sizeof(int16_t));
 
     s->block_last_index[0 /* FIXME */] =
-        s->fast_dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
+        s->dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
     s->dct_unquantize_inter(s, temp, 0, s->qscale);
     ff_simple_idct_int16_8bit(temp); // FIXME
 
@@ -779,7 +779,7 @@ static int rd8x8_c(MpegEncContext *s, const uint8_t *src1, const uint8_t *src2,
 
     s->block_last_index[0 /* FIXME */] =
     last                               =
-        s->fast_dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
+        s->dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
 
     bits = 0;
 
@@ -849,7 +849,7 @@ static int bit8x8_c(MpegEncContext *s, const uint8_t *src1, const uint8_t *src2,
 
     s->block_last_index[0 /* FIXME */] =
     last                               =
-        s->fast_dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
+        s->dct_quantize(s, temp, 0 /* FIXME */, s->qscale, &i);
 
     bits = 0;
 
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 8351f806b4..60dcf65288 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -501,7 +501,6 @@ typedef struct MpegEncContext {
     void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (MPEG-4 can use both)
                            int16_t *block/*align 16*/, int n, int qscale);
     int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
-    int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
     void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
 
     int mpv_flags;      ///< flags set by private options
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 76243c160b..6adcd483f4 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -302,7 +302,6 @@ av_cold int ff_dct_encode_init(MpegEncContext *s)
     ff_dct_encode_init_x86(s);
 #endif
 
-    s->fast_dct_quantize = s->dct_quantize;
     if (s->avctx->trellis)
         s->dct_quantize  = dct_quantize_trellis_c;