diff --git a/modules/audio_processing/include/audio_processing.h b/modules/audio_processing/include/audio_processing.h
index 9e6eed42ee..6bc50f0554 100644
--- a/modules/audio_processing/include/audio_processing.h
+++ b/modules/audio_processing/include/audio_processing.h
@@ -275,7 +275,7 @@ class RTC_EXPORT AudioProcessing : public rtc::RefCountInterface {
     // in the analog mode, prescribing an analog gain to be applied at the audio
     // HAL.
     // Recommended to be enabled on the client-side.
-    struct GainController1 {
+    struct RTC_EXPORT GainController1 {
       bool operator==(const GainController1& rhs) const;
       bool operator!=(const GainController1& rhs) const {
         return !(*this == rhs);
@@ -343,7 +343,7 @@ class RTC_EXPORT AudioProcessing : public rtc::RefCountInterface {
     // setting |fixed_gain_db|, the limiter can be turned into a compressor that
     // first applies a fixed gain. The adaptive digital AGC can be turned off by
     // setting |adaptive_digital_mode=false|.
-    struct GainController2 {
+    struct RTC_EXPORT GainController2 {
       bool operator==(const GainController2& rhs) const;
       bool operator!=(const GainController2& rhs) const {
         return !(*this == rhs);
@@ -356,7 +356,7 @@ class RTC_EXPORT AudioProcessing : public rtc::RefCountInterface {
       struct FixedDigital {
         float gain_db = 0.0f;
       } fixed_digital;
-      struct AdaptiveDigital {
+      struct RTC_EXPORT AdaptiveDigital {
         bool operator==(const AdaptiveDigital& rhs) const;
         bool operator!=(const AdaptiveDigital& rhs) const {
           return !(*this == rhs);