diff --git a/src/keyer.cpp b/src/keyer.cpp
index a966e56..e30f0a5 100644
--- a/src/keyer.cpp
+++ b/src/keyer.cpp
@@ -10,7 +10,7 @@ extern const uint LEFT_PADDLE_PIN;
 extern const uint RIGHT_PADDLE_PIN;
 extern const uint BUZZER_PIN;
 extern const uint CW_OUT_PIN;
-extern const uint AUDIO_OUT_PIN;
+//extern const uint AUDIO_OUT_PIN;
 
 const uint SIDETONE_FREQ = 622;
 
diff --git a/src/raspi_keyer.cpp b/src/raspi_keyer.cpp
index 4b68c10..cc5f3a8 100644
--- a/src/raspi_keyer.cpp
+++ b/src/raspi_keyer.cpp
@@ -22,7 +22,7 @@ extern const uint LEFT_PADDLE_PIN = 14;
 extern const uint RIGHT_PADDLE_PIN = 15;
 extern const uint BUZZER_PIN = 18;
 extern const uint CW_OUT_PIN = 17;
-extern const uint AUDIO_OUT_PIN = 16;
+//extern const uint AUDIO_OUT_PIN = 16;
 extern const uint ADC_PIN = 26;
 
 // Stuff for communicating between cores