diff --git a/libavcodec/x86/h264_deblock.asm b/libavcodec/x86/h264_deblock.asm
index 1f1dbc6a2fe5f132e51c974ffacb041ecbbaed67..67f9c024641b3da73e56b4262b85e8eecda2c9a5 100644
--- a/libavcodec/x86/h264_deblock.asm
+++ b/libavcodec/x86/h264_deblock.asm
@@ -621,7 +621,11 @@ DEBLOCK_LUMA v, 16
     %define t5 m11
     %define mask0 m12
     %define mask1p m13
+%if WIN64
+    %define mask1q [rsp]
+%else
     %define mask1q [rsp-24]
+%endif
     %define mpb_0 m14
     %define mpb_1 m15
 %else
@@ -640,7 +644,11 @@ DEBLOCK_LUMA v, 16
 ;-----------------------------------------------------------------------------
 ; void deblock_v_luma_intra( uint8_t *pix, int stride, int alpha, int beta )
 ;-----------------------------------------------------------------------------
+%if WIN64
+cglobal deblock_%1_luma_intra_8, 4,6,16,0x10
+%else
 cglobal deblock_%1_luma_intra_8, 4,6,16,ARCH_X86_64*0x50-0x50
+%endif
     lea     r4, [r1*4]
     lea     r5, [r1*3] ; 3*stride
     dec     r2d        ; alpha-1