diff --git a/src/modules/audio_device/main/interface/audio_device.h b/src/modules/audio_device/main/interface/audio_device.h
index b60b695fd5..9975615994 100644
--- a/src/modules/audio_device/main/interface/audio_device.h
+++ b/src/modules/audio_device/main/interface/audio_device.h
@@ -191,7 +191,7 @@ class AudioDeviceModule : public RefCountedModule {
   // 1. StartPlayout() must be called before StartRecording().
   // 2. StopRecording() should be called before StopPlayout().
   //    The reverse order may cause garbage audio to be rendered or the
-  //    capture side to halt util StopRecording() is called.
+  //    capture side to halt until StopRecording() is called.
   virtual int32_t EnableBuiltInAEC(bool enable) { return -1; }
   virtual bool BuiltInAECIsEnabled() const { return false; }
 
diff --git a/src/voice_engine/main/interface/voe_hardware.h b/src/voice_engine/main/interface/voe_hardware.h
index caa57d2380..d40ac80e81 100644
--- a/src/voice_engine/main/interface/voe_hardware.h
+++ b/src/voice_engine/main/interface/voe_hardware.h
@@ -120,7 +120,7 @@ public:
     // 1. VoEBase::StartPlayout() must be called before VoEBase::StartSend().
     // 2. VoEBase::StopSend() should be called before VoEBase::StopPlayout().
     //    The reverse order may cause garbage audio to be rendered or the
-    //    capture side to halt util StopSend() is called.
+    //    capture side to halt until StopSend() is called.
     //
     //    As a consequence, SetPlayoutDevice() should be used with caution
     //    during a call. It will function, but may cause the above issues for