diff --git a/vp9/encoder/x86/vp9_dct32x32_sse2.c b/vp9/encoder/x86/vp9_dct32x32_sse2_impl.h
similarity index 100%
rename from vp9/encoder/x86/vp9_dct32x32_sse2.c
rename to vp9/encoder/x86/vp9_dct32x32_sse2_impl.h
diff --git a/vp9/encoder/x86/vp9_dct_sse2.c b/vp9/encoder/x86/vp9_dct_sse2.c
index 6d1f52a00..73ed5ed4b 100644
--- a/vp9/encoder/x86/vp9_dct_sse2.c
+++ b/vp9/encoder/x86/vp9_dct_sse2.c
@@ -2371,7 +2371,7 @@ void vp9_highbd_fht16x16_sse2(const int16_t *input, tran_low_t *output,
 /*
  * The DCTnxn functions are defined using the macros below. The main code for
  * them is in separate files (vp9/encoder/x86/vp9_dct_impl_sse2.c &
- * vp9/encoder/x86/vp9_dct32x32_sse2.c) which are used by both the 8 bit code
+ * vp9/encoder/x86/vp9_dct32x32_sse2_impl.h) which are used by both the 8 bit code
  * and the high bit depth code.
  */
 
@@ -2387,13 +2387,13 @@ void vp9_highbd_fht16x16_sse2(const int16_t *input, tran_low_t *output,
 
 #define FDCT32x32_2D vp9_fdct32x32_rd_sse2
 #define FDCT32x32_HIGH_PRECISION 0
-#include "vp9/encoder/x86/vp9_dct32x32_sse2.c"
+#include "vp9/encoder/x86/vp9_dct32x32_sse2_impl.h"
 #undef  FDCT32x32_2D
 #undef  FDCT32x32_HIGH_PRECISION
 
 #define FDCT32x32_2D vp9_fdct32x32_sse2
 #define FDCT32x32_HIGH_PRECISION 1
-#include "vp9/encoder/x86/vp9_dct32x32_sse2.c" // NOLINT
+#include "vp9/encoder/x86/vp9_dct32x32_sse2_impl.h" // NOLINT
 #undef  FDCT32x32_2D
 #undef  FDCT32x32_HIGH_PRECISION
 
@@ -2414,13 +2414,13 @@ void vp9_highbd_fht16x16_sse2(const int16_t *input, tran_low_t *output,
 
 #define FDCT32x32_2D vp9_highbd_fdct32x32_rd_sse2
 #define FDCT32x32_HIGH_PRECISION 0
-#include "vp9/encoder/x86/vp9_dct32x32_sse2.c" // NOLINT
+#include "vp9/encoder/x86/vp9_dct32x32_sse2_impl.h" // NOLINT
 #undef  FDCT32x32_2D
 #undef  FDCT32x32_HIGH_PRECISION
 
 #define FDCT32x32_2D vp9_highbd_fdct32x32_sse2
 #define FDCT32x32_HIGH_PRECISION 1
-#include "vp9/encoder/x86/vp9_dct32x32_sse2.c" // NOLINT
+#include "vp9/encoder/x86/vp9_dct32x32_sse2_impl.h" // NOLINT
 #undef  FDCT32x32_2D
 #undef  FDCT32x32_HIGH_PRECISION
 
diff --git a/vp9/vp9cx.mk b/vp9/vp9cx.mk
index ba99a91bb..2440a6ac8 100644
--- a/vp9/vp9cx.mk
+++ b/vp9/vp9cx.mk
@@ -134,7 +134,7 @@ VP9_CX_SRCS-$(ARCH_X86_64) += encoder/x86/vp9_ssim_opt_x86_64.asm
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_dct_sse2.c
 VP9_CX_SRCS-$(HAVE_SSSE3) += encoder/x86/vp9_dct_ssse3.c
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_dct_sse2.h
-VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_dct32x32_sse2.c
+VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_dct32x32_sse2_impl.h
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_dct_impl_sse2.c
 
 ifeq ($(CONFIG_VP9_TEMPORAL_DENOISING),yes)