diff --git a/test/vp10_fwd_txfm1d_test.cc b/test/vp10_fwd_txfm1d_test.cc
index 2d09e0d32..d6643e5b9 100644
--- a/test/vp10_fwd_txfm1d_test.cc
+++ b/test/vp10_fwd_txfm1d_test.cc
@@ -12,23 +12,28 @@
 #include "test/vp10_txfm_test.h"
 
 using libvpx_test::ACMRandom;
+using libvpx_test::base;
+using libvpx_test::reference_hybrid_1d;
+using libvpx_test::TYPE_TXFM;
+using libvpx_test::TYPE_DCT;
+using libvpx_test::TYPE_ADST;
 
 namespace {
-static int txfm_type_num = 2;
-static TYPE_TXFM txfm_type_ls[2] = {TYPE_DCT, TYPE_ADST};
+const int txfm_type_num = 2;
+const TYPE_TXFM txfm_type_ls[2] = {TYPE_DCT, TYPE_ADST};
 
-static int txfm_size_num = 5;
-static int txfm_size_ls[5] = {4, 8, 16, 32, 64};
+const int txfm_size_num = 5;
+const int txfm_size_ls[5] = {4, 8, 16, 32, 64};
 
-static TxfmFunc fwd_txfm_func_ls[2][5] = {
+const TxfmFunc fwd_txfm_func_ls[2][5] = {
     {vp10_fdct4_new, vp10_fdct8_new, vp10_fdct16_new, vp10_fdct32_new,
      vp10_fdct64_new},
     {vp10_fadst4_new, vp10_fadst8_new, vp10_fadst16_new, vp10_fadst32_new,
      NULL}};
 
 // the maximum stage number of fwd/inv 1d dct/adst txfm is 12
-static int8_t cos_bit[12] = {14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14};
-static int8_t range_bit[12] = {32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32};
+const int8_t cos_bit[12] = {14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14};
+const int8_t range_bit[12] = {32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32};
 
 TEST(vp10_fwd_txfm1d, round_shift) {
   EXPECT_EQ(round_shift(7, 1), 4);
diff --git a/test/vp10_fwd_txfm2d_test.cc b/test/vp10_fwd_txfm2d_test.cc
index 137f6531e..adf00a8f8 100644
--- a/test/vp10_fwd_txfm2d_test.cc
+++ b/test/vp10_fwd_txfm2d_test.cc
@@ -18,6 +18,13 @@
 #include "./vp10_rtcd.h"
 
 using libvpx_test::ACMRandom;
+using libvpx_test::base;
+using libvpx_test::bd;
+using libvpx_test::compute_avg_abs_error;
+using libvpx_test::Fwd_Txfm2d_Func;
+using libvpx_test::TYPE_TXFM;
+using libvpx_test::TYPE_DCT;
+using libvpx_test::TYPE_ADST;
 
 namespace {
 
@@ -106,4 +113,4 @@ TEST(vp10_fwd_txfm2d, accuracy) {
 }
 #endif  // CONFIG_VP9_HIGHBITDEPTH
 
-}  // anonymous namespace
+}  // namespace
diff --git a/test/vp10_inv_txfm1d_test.cc b/test/vp10_inv_txfm1d_test.cc
index 2e9e58d43..98b277735 100644
--- a/test/vp10_inv_txfm1d_test.cc
+++ b/test/vp10_inv_txfm1d_test.cc
@@ -13,27 +13,28 @@
 #include "vp10/common/vp10_inv_txfm1d.h"
 
 using libvpx_test::ACMRandom;
+using libvpx_test::base;
 
 namespace {
-static int txfm_type_num = 2;
-static int txfm_size_num = 5;
-static int txfm_size_ls[5] = {4, 8, 16, 32, 64};
+const int txfm_type_num = 2;
+const int txfm_size_num = 5;
+const int txfm_size_ls[5] = {4, 8, 16, 32, 64};
 
-static TxfmFunc fwd_txfm_func_ls[2][5] = {
+const TxfmFunc fwd_txfm_func_ls[2][5] = {
     {vp10_fdct4_new, vp10_fdct8_new, vp10_fdct16_new, vp10_fdct32_new,
      vp10_fdct64_new},
     {vp10_fadst4_new, vp10_fadst8_new, vp10_fadst16_new, vp10_fadst32_new,
      NULL}};
 
-static TxfmFunc inv_txfm_func_ls[2][5] = {
+const TxfmFunc inv_txfm_func_ls[2][5] = {
     {vp10_idct4_new, vp10_idct8_new, vp10_idct16_new, vp10_idct32_new,
      vp10_idct64_new},
     {vp10_iadst4_new, vp10_iadst8_new, vp10_iadst16_new, vp10_iadst32_new,
      NULL}};
 
 // the maximum stage number of fwd/inv 1d dct/adst txfm is 12
-static int8_t cos_bit[12] = {14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14};
-static int8_t range_bit[12] = {32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32};
+const int8_t cos_bit[12] = {14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14};
+const int8_t range_bit[12] = {32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32};
 
 TEST(vp10_inv_txfm1d, round_trip) {
   ACMRandom rnd(ACMRandom::DeterministicSeed());
diff --git a/test/vp10_inv_txfm2d_test.cc b/test/vp10_inv_txfm2d_test.cc
index 9257244cd..7acb3290a 100644
--- a/test/vp10_inv_txfm2d_test.cc
+++ b/test/vp10_inv_txfm2d_test.cc
@@ -19,6 +19,11 @@
 #include "vp10/common/vp10_inv_txfm2d_cfg.h"
 
 using libvpx_test::ACMRandom;
+using libvpx_test::base;
+using libvpx_test::bd;
+using libvpx_test::compute_avg_abs_error;
+using libvpx_test::Fwd_Txfm2d_Func;
+using libvpx_test::Inv_Txfm2d_Func;
 
 namespace {
 
@@ -116,4 +121,4 @@ TEST(vp10_inv_txfm2d, round_trip) {
 }
 #endif  // CONFIG_VP9_HIGHBITDEPTH
 
-}  // anonymous namespace
+}  // namespace
diff --git a/test/vp10_txfm_test.h b/test/vp10_txfm_test.h
index a3a4258f9..c5bbb4842 100644
--- a/test/vp10_txfm_test.h
+++ b/test/vp10_txfm_test.h
@@ -23,6 +23,7 @@
 #include "test/acm_random.h"
 #include "vp10/common/vp10_txfm.h"
 
+namespace libvpx_test {
 typedef enum {
   TYPE_DCT = 0,
   TYPE_ADST,
@@ -109,5 +110,5 @@ typedef void (*Inv_Txfm2d_Func)(const int32_t*, uint16_t*, const int,
 
 static const int bd = 10;
 static const int base = (1 << bd);
-
+}  // namespace libvpx_test
 #endif  // VP10_TXFM_TEST_H_