diff --git a/libavcodec/x86/hevc_idct.asm b/libavcodec/x86/hevc_idct.asm
index 1eb1973f27..ce41f33822 100644
--- a/libavcodec/x86/hevc_idct.asm
+++ b/libavcodec/x86/hevc_idct.asm
@@ -811,7 +811,6 @@ cglobal hevc_idct_32x32_%1, 1, 6, 16, 256, coeffs
 %macro INIT_IDCT_DC 1
 INIT_MMX mmxext
 IDCT_DC_NL  4,      %1
-IDCT_DC     8,  2,  %1
 
 INIT_XMM sse2
 IDCT_DC_NL  8,      %1
diff --git a/libavcodec/x86/hevcdsp_init.c b/libavcodec/x86/hevcdsp_init.c
index 48f48a925f..f7a5b28bec 100644
--- a/libavcodec/x86/hevcdsp_init.c
+++ b/libavcodec/x86/hevcdsp_init.c
@@ -64,7 +64,6 @@ void ff_hevc_idct_ ## W ## _dc_10_ ## opt(int16_t *coeffs); \
 void ff_hevc_idct_ ## W ## _dc_12_ ## opt(int16_t *coeffs)
 
 IDCT_DC_FUNCS(4x4,   mmxext);
-IDCT_DC_FUNCS(8x8,   mmxext);
 IDCT_DC_FUNCS(8x8,   sse2);
 IDCT_DC_FUNCS(16x16, sse2);
 IDCT_DC_FUNCS(32x32, sse2);
@@ -712,7 +711,6 @@ void ff_hevc_dsp_init_x86(HEVCDSPContext *c, const int bit_depth)
     if (bit_depth == 8) {
         if (EXTERNAL_MMXEXT(cpu_flags)) {
             c->idct_dc[0] = ff_hevc_idct_4x4_dc_8_mmxext;
-            c->idct_dc[1] = ff_hevc_idct_8x8_dc_8_mmxext;
 
             c->add_residual[0] = ff_hevc_add_residual_4_8_mmxext;
         }
@@ -889,7 +887,6 @@ void ff_hevc_dsp_init_x86(HEVCDSPContext *c, const int bit_depth)
         if (EXTERNAL_MMXEXT(cpu_flags)) {
             c->add_residual[0] = ff_hevc_add_residual_4_10_mmxext;
             c->idct_dc[0] = ff_hevc_idct_4x4_dc_10_mmxext;
-            c->idct_dc[1] = ff_hevc_idct_8x8_dc_10_mmxext;
         }
         if (EXTERNAL_SSE2(cpu_flags)) {
             c->hevc_v_loop_filter_chroma = ff_hevc_v_loop_filter_chroma_10_sse2;
@@ -1105,7 +1102,6 @@ void ff_hevc_dsp_init_x86(HEVCDSPContext *c, const int bit_depth)
     } else if (bit_depth == 12) {
         if (EXTERNAL_MMXEXT(cpu_flags)) {
             c->idct_dc[0] = ff_hevc_idct_4x4_dc_12_mmxext;
-            c->idct_dc[1] = ff_hevc_idct_8x8_dc_12_mmxext;
         }
         if (EXTERNAL_SSE2(cpu_flags)) {
             c->hevc_v_loop_filter_chroma = ff_hevc_v_loop_filter_chroma_12_sse2;