diff --git a/vp9/encoder/vp9_dct.c b/vp9/encoder/vp9_dct.c
index 09b2bbbf2..52ec0f44c 100644
--- a/vp9/encoder/vp9_dct.c
+++ b/vp9/encoder/vp9_dct.c
@@ -11,16 +11,15 @@
 #include <assert.h>
 #include <math.h>
 
-#include "./vpx_config.h"
 #include "./vp9_rtcd.h"
+#include "./vpx_config.h"
 #include "./vpx_dsp_rtcd.h"
 
 #include "vp9/common/vp9_blockd.h"
 #include "vp9/common/vp9_idct.h"
 #include "vp9/common/vp9_systemdependent.h"
-#include "vp9/encoder/vp9_dct.h"
-#include "vpx_ports/mem.h"
 #include "vpx_dsp/fwd_txfm.h"
+#include "vpx_ports/mem.h"
 
 static void fdct4(const tran_low_t *input, tran_low_t *output) {
   tran_high_t step[4];
diff --git a/vp9/encoder/vp9_dct.h b/vp9/encoder/vp9_dct.h
deleted file mode 100644
index 6ce7e968c..000000000
--- a/vp9/encoder/vp9_dct.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- *  Copyright (c) 2014 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_VP9_DCT_H_
-#define VP9_ENCODER_VP9_DCT_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-void vp9_fdct32(const tran_high_t *input, tran_high_t *output, int round);
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-
-#endif  // VP9_ENCODER_VP9_DCT_H_
diff --git a/vp9/vp9cx.mk b/vp9/vp9cx.mk
index 2b5d0a70d..4fbb0a954 100644
--- a/vp9/vp9cx.mk
+++ b/vp9/vp9cx.mk
@@ -24,7 +24,6 @@ VP9_CX_SRCS-yes += encoder/vp9_context_tree.h
 VP9_CX_SRCS-yes += encoder/vp9_cost.h
 VP9_CX_SRCS-yes += encoder/vp9_cost.c
 VP9_CX_SRCS-yes += encoder/vp9_dct.c
-VP9_CX_SRCS-yes += encoder/vp9_dct.h
 VP9_CX_SRCS-$(CONFIG_VP9_TEMPORAL_DENOISING) += encoder/vp9_denoiser.c
 VP9_CX_SRCS-$(CONFIG_VP9_TEMPORAL_DENOISING) += encoder/vp9_denoiser.h
 VP9_CX_SRCS-yes += encoder/vp9_encodeframe.c