diff --git a/aom_dsp/aom_dsp_rtcd_defs.pl b/aom_dsp/aom_dsp_rtcd_defs.pl
index baea019..ff8b48f 100755
--- a/aom_dsp/aom_dsp_rtcd_defs.pl
+++ b/aom_dsp/aom_dsp_rtcd_defs.pl
@@ -607,14 +607,16 @@
     add_proto qw/void aom_fdct4x4_lp/, "const int16_t *input, int16_t *output, int stride";
     specialize qw/aom_fdct4x4_lp neon sse2/;
 
-    # 8x8 DCT transform for psnr-hvs. Unlike other transforms isn't compatible
-    # with av1 scan orders, because it does two transposes.
-    add_proto qw/void aom_fdct8x8/, "const int16_t *input, tran_low_t *output, int stride";
-    specialize qw/aom_fdct8x8 neon sse2/, "$ssse3_x86_64";
-    # High bit depth
-    if (aom_config("CONFIG_AV1_HIGHBITDEPTH") eq "yes") {
-      add_proto qw/void aom_highbd_fdct8x8/, "const int16_t *input, tran_low_t *output, int stride";
-      specialize qw/aom_highbd_fdct8x8 sse2/;
+    if (aom_config("CONFIG_INTERNAL_STATS") eq "yes"){
+      # 8x8 DCT transform for psnr-hvs. Unlike other transforms isn't compatible
+      # with av1 scan orders, because it does two transposes.
+      add_proto qw/void aom_fdct8x8/, "const int16_t *input, tran_low_t *output, int stride";
+      specialize qw/aom_fdct8x8 neon sse2/, "$ssse3_x86_64";
+      # High bit depth
+      if (aom_config("CONFIG_AV1_HIGHBITDEPTH") eq "yes") {
+        add_proto qw/void aom_highbd_fdct8x8/, "const int16_t *input, tran_low_t *output, int stride";
+        specialize qw/aom_highbd_fdct8x8 sse2/;
+      }
     }
     # FFT/IFFT (float) only used for denoising (and noise power spectral density estimation)
     add_proto qw/void aom_fft2x2_float/, "const float *input, float *temp, float *output";
diff --git a/aom_dsp/fwd_txfm.c b/aom_dsp/fwd_txfm.c
index fbf9ead..5503501 100644
--- a/aom_dsp/fwd_txfm.c
+++ b/aom_dsp/fwd_txfm.c
@@ -151,6 +151,7 @@
   }
 }
 
+#if CONFIG_INTERNAL_STATS
 void aom_fdct8x8_c(const int16_t *input, tran_low_t *final_output, int stride) {
   int i, j;
   tran_low_t intermediate[64];
@@ -234,8 +235,9 @@
     for (j = 0; j < 8; ++j) final_output[j + i * 8] /= 2;
   }
 }
+#endif  // CONFIG_INTERNAL_STATS
 
-#if CONFIG_AV1_HIGHBITDEPTH
+#if CONFIG_AV1_HIGHBITDEPTH && CONFIG_INTERNAL_STATS
 void aom_highbd_fdct8x8_c(const int16_t *input, tran_low_t *final_output,
                           int stride) {
   aom_fdct8x8_c(input, final_output, stride);
diff --git a/aom_dsp/x86/fwd_txfm_impl_sse2.h b/aom_dsp/x86/fwd_txfm_impl_sse2.h
index df1e229..7ee8ba3 100644
--- a/aom_dsp/x86/fwd_txfm_impl_sse2.h
+++ b/aom_dsp/x86/fwd_txfm_impl_sse2.h
@@ -213,6 +213,7 @@
   _mm_storeu_si128((__m128i *)(output + 2 * 4), in1);
 }
 
+#if CONFIG_INTERNAL_STATS
 void FDCT8x8_2D(const int16_t *input, tran_low_t *output, int stride) {
   int pass;
   // Constants
@@ -522,6 +523,7 @@
     store_output(&in7, (output + 7 * 8));
   }
 }
+#endif  // CONFIG_INTERNAL_STATS
 
 #undef ADD_EPI16
 #undef SUB_EPI16