diff --git a/test/dct16x16_test.cc b/test/dct16x16_test.cc
index 25972ef..7cd0ba3 100644
--- a/test/dct16x16_test.cc
+++ b/test/dct16x16_test.cc
@@ -236,12 +236,12 @@
     Idct16x16Param;
 
 void fdct16x16_ref(const int16_t *in, tran_low_t *out, int stride,
-                   FWD_TXFM_PARAM *fwd_txfm_param) {
+                   FWD_TXFM_PARAM * /*fwd_txfm_param*/) {
   aom_fdct16x16_c(in, out, stride);
 }
 
 void idct16x16_ref(const tran_low_t *in, uint8_t *dest, int stride,
-                   const INV_TXFM_PARAM *inv_txfm_param) {
+                   const INV_TXFM_PARAM * /*inv_txfm_param*/) {
   aom_idct16x16_256_add_c(in, dest, stride);
 }
 
diff --git a/test/fdct4x4_test.cc b/test/fdct4x4_test.cc
index 30043d6..68b35fa 100644
--- a/test/fdct4x4_test.cc
+++ b/test/fdct4x4_test.cc
@@ -41,7 +41,7 @@
 typedef std::tr1::tuple<FhtFunc, IhtFunc, int, aom_bit_depth_t, int> Ht4x4Param;
 
 void fdct4x4_ref(const int16_t *in, tran_low_t *out, int stride,
-                 FWD_TXFM_PARAM *fwd_txfm_param) {
+                 FWD_TXFM_PARAM * /*fwd_txfm_param*/) {
   aom_fdct4x4_c(in, out, stride);
 }
 
@@ -51,7 +51,7 @@
 }
 
 void fwht4x4_ref(const int16_t *in, tran_low_t *out, int stride,
-                 FWD_TXFM_PARAM *fwd_txfm_param) {
+                 FWD_TXFM_PARAM * /*fwd_txfm_param*/) {
   av1_fwht4x4_c(in, out, stride);
 }
 
diff --git a/test/fdct8x8_test.cc b/test/fdct8x8_test.cc
index 0bb3c60..059ce7f 100644
--- a/test/fdct8x8_test.cc
+++ b/test/fdct8x8_test.cc
@@ -78,7 +78,7 @@
 }
 
 void fdct8x8_ref(const int16_t *in, tran_low_t *out, int stride,
-                 FWD_TXFM_PARAM *fwd_txfm_param) {
+                 FWD_TXFM_PARAM * /*fwd_txfm_param*/) {
   aom_fdct8x8_c(in, out, stride);
 }