diff --git a/main/audio_processing/audio_processor.cc b/main/audio_processing/audio_processor.cc
index ff3efcb1..8c72af3a 100644
--- a/main/audio_processing/audio_processor.cc
+++ b/main/audio_processing/audio_processor.cc
@@ -78,7 +78,9 @@ void AudioProcessor::Start() {
 
 void AudioProcessor::Stop() {
     xEventGroupClearBits(event_group_, PROCESSOR_RUNNING);
-    afe_iface_->reset_buffer(afe_data_);
+    if (afe_data_ != nullptr) {
+        afe_iface_->reset_buffer(afe_data_);
+    }
 }
 
 bool AudioProcessor::IsRunning() {
diff --git a/main/audio_processing/wake_word_detect.cc b/main/audio_processing/wake_word_detect.cc
index e2b864a2..42ed1024 100644
--- a/main/audio_processing/wake_word_detect.cc
+++ b/main/audio_processing/wake_word_detect.cc
@@ -83,7 +83,9 @@ void WakeWordDetect::StartDetection() {
 
 void WakeWordDetect::StopDetection() {
     xEventGroupClearBits(event_group_, DETECTION_RUNNING_EVENT);
-    afe_iface_->reset_buffer(afe_data_);
+    if (afe_data_ != nullptr) {
+        afe_iface_->reset_buffer(afe_data_);
+    }
 }
 
 bool WakeWordDetect::IsDetectionRunning() {