diff --git a/modules/audio_processing/audio_processing_unittest.cc b/modules/audio_processing/audio_processing_unittest.cc
index 199f3780df..8f29a739ed 100644
--- a/modules/audio_processing/audio_processing_unittest.cc
+++ b/modules/audio_processing/audio_processing_unittest.cc
@@ -2692,4 +2692,13 @@ TEST(ApmConfiguration, HandlingOfRateCombinations) {
                            capture_channel_counts);
 }
 
+TEST(ApmConfiguration, SelfAssignment) {
+  // At some point memory sanitizer was complaining about self-assigment.
+  // Make sure we don't regress.
+  AudioProcessing::Config config;
+  AudioProcessing::Config* config2 = &config;
+  *config2 = *config2;  // Workaround -Wself-assign-overloaded
+  SUCCEED();  // Real success is absence of defects from asan/msan/ubsan.
+}
+
 }  // namespace webrtc
diff --git a/modules/audio_processing/include/audio_processing.h b/modules/audio_processing/include/audio_processing.h
index ba56684991..e8ecd6e308 100644
--- a/modules/audio_processing/include/audio_processing.h
+++ b/modules/audio_processing/include/audio_processing.h
@@ -247,22 +247,6 @@ class RTC_EXPORT AudioProcessing : public rtc::RefCountInterface {
   // submodule resets, affecting the audio quality. Use the RuntimeSetting
   // construct for runtime configuration.
   struct RTC_EXPORT Config {
-    Config() = default;
-
-    // Explicit copy assignment implementation to avoid issues with memory
-    // sanitizer complaints in case of self-assignment.
-    // TODO(peah): Add buildflag to ensure that this is only included for memory
-    // sanitizer builds.
-    Config& operator=(const Config& config) {
-      if (this != &config) {
-        memcpy(this, &config, sizeof(*this));
-      }
-      return *this;
-    }
-
-    // Explicit copy constructor needed to avoid errors due to the above
-    // implemented copy assignment operator.
-    Config(const Config& config) { *this = config; }
 
     // Sets the properties of the audio processing pipeline.
     struct RTC_EXPORT Pipeline {