diff --git a/libavcodec/x86/flacdsp.asm b/libavcodec/x86/flacdsp.asm
index 43a2f01843..901c440ccd 100644
--- a/libavcodec/x86/flacdsp.asm
+++ b/libavcodec/x86/flacdsp.asm
@@ -80,14 +80,10 @@ LPC_32 sse4
 ;----------------------------------------------------------------------------------
 %macro FLAC_DECORRELATE_16 3-4
 cglobal flac_decorrelate_%1_16, 2, 4, 4, out, in0, in1, len
-%if ARCH_X86_32 || WIN64
-    movd       m3, r4m
 %if ARCH_X86_32
     mov      lend, lenm
 %endif
-%else ; UNIX64
-    movd       m3, r4d
-%endif
+    movd       m3, r4m
     shl      lend, 2
     mov      in1q, [in0q + gprsize]
     mov      in0q, [in0q]
@@ -129,14 +125,10 @@ FLAC_DECORRELATE_16 ms, 2, 0, add
 ;----------------------------------------------------------------------------------
 %macro FLAC_DECORRELATE_32 5
 cglobal flac_decorrelate_%1_32, 2, 4, 4, out, in0, in1, len
-%if ARCH_X86_32 || WIN64
-    movd       m3, r4m
 %if ARCH_X86_32
     mov      lend, lenm
 %endif
-%else ; UNIX64
-    movd       m3, r4d
-%endif
+    movd       m3, r4m
     mov      in1q, [in0q + gprsize]
     mov      in0q, [in0q]
     mov      outq, [outq]
@@ -183,18 +175,14 @@ FLAC_DECORRELATE_32 ms, 2, 0, 1, add
 %define REPCOUNT %2/(32/%1) ; 16bits = channels / 2; 32bits = channels
 cglobal flac_decorrelate_indep%2_%1, 2, %2+2, %3+1, out, in0, in1, len, in2, in3, in4, in5, in6, in7
 %if ARCH_X86_32
-    movd      m%3, r4m
 %if %2 == 6
     DEFINE_ARGS out, in0, in1, in2, in3, in4, in5
     %define  lend  dword r3m
 %else
     mov      lend, lenm
 %endif
-%elif WIN64
-    movd      m%3, r4m
-%else ; UNIX64
-    movd      m%3, r4d
 %endif
+    movd      m%3, r4m
 
 %assign %%i 1
 %rep %2-1