diff --git a/modules/audio_processing/agc2/rnn_vad/BUILD.gn b/modules/audio_processing/agc2/rnn_vad/BUILD.gn
index d1edece..867a9bb 100644
--- a/modules/audio_processing/agc2/rnn_vad/BUILD.gn
+++ b/modules/audio_processing/agc2/rnn_vad/BUILD.gn
@@ -9,6 +9,7 @@
 import("../../../../webrtc.gni")
 
 rtc_source_set("rnn_vad") {
+  configs += [ "../../../..:no_global_constructors" ]
   sources = [
     "common.h",
     "features_extraction.cc",
diff --git a/modules/audio_processing/agc2/rnn_vad/spectral_features_internal.cc b/modules/audio_processing/agc2/rnn_vad/spectral_features_internal.cc
index 2d5a46c..4cbe48a 100644
--- a/modules/audio_processing/agc2/rnn_vad/spectral_features_internal.cc
+++ b/modules/audio_processing/agc2/rnn_vad/spectral_features_internal.cc
@@ -17,6 +17,12 @@
 
 namespace webrtc {
 namespace rnn_vad {
+namespace {
+
+// DCT scaling factor.
+const float kDctScalingFactor = std::sqrt(2.f / kNumBands);
+
+}  // namespace
 
 std::array<size_t, kNumBands> ComputeBandBoundaryIndexes(
     size_t sample_rate_hz,
@@ -110,8 +116,6 @@
   RTC_DCHECK_LE(1, out.size());
   RTC_DCHECK_LE(out.size(), in.size());
   std::fill(out.begin(), out.end(), 0.f);
-  // DCT scaling factor.
-  const float kDctScalingFactor = std::sqrt(2.f / kNumBands);
   for (size_t i = 0; i < out.size(); ++i) {
     for (size_t j = 0; j < in.size(); ++j) {
       out[i] += in[j] * dct_table[j * in.size() + i];