diff --git a/vp9/encoder/x86/vp9_mcomp_x86.h b/vp9/encoder/x86/vp9_mcomp_x86.h
deleted file mode 100644
index c15039ad819f7e274c717544e4e6cde903376157..0000000000000000000000000000000000000000
--- a/vp9/encoder/x86/vp9_mcomp_x86.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-
-#ifndef VP9_ENCODER_X86_VP9_MCOMP_X86_H_
-#define VP9_ENCODER_X86_VP9_MCOMP_X86_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if HAVE_SSE3
-#if !CONFIG_RUNTIME_CPU_DETECT
-
-#undef  vp9_search_full_search
-#define vp9_search_full_search vp9_full_search_sadx3
-
-#undef  vp9_search_refining_search
-#define vp9_search_refining_search vp9_refining_search_sadx4
-
-#undef  vp9_search_diamond_search
-#define vp9_search_diamond_search vp9_diamond_search_sadx4
-
-#endif
-#endif
-
-#if HAVE_SSE4_1
-#if !CONFIG_RUNTIME_CPU_DETECT
-
-#undef  vp9_search_full_search
-#define vp9_search_full_search vp9_full_search_sadx8
-
-#endif
-#endif
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-
-#endif  // VP9_ENCODER_X86_VP9_MCOMP_X86_H_
-
diff --git a/vp9/vp9cx.mk b/vp9/vp9cx.mk
index da6c0f8b6ef2720fd2761c43fc76d13816255aff..24b8d9de15ca79bccd1e9f4051ec9e3d5fe9a358 100644
--- a/vp9/vp9cx.mk
+++ b/vp9/vp9cx.mk
@@ -87,8 +87,6 @@ VP9_CX_SRCS-yes += encoder/vp9_temporal_filter.h
 VP9_CX_SRCS-yes += encoder/vp9_mbgraph.c
 VP9_CX_SRCS-yes += encoder/vp9_mbgraph.h
 
-
-VP9_CX_SRCS-$(ARCH_X86)$(ARCH_X86_64) += encoder/x86/vp9_mcomp_x86.h
 VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_variance_mmx.c
 VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_variance_impl_mmx.asm
 VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_sad_mmx.asm