diff --git a/adafruit_pycamera/__init__.py b/adafruit_pycamera/__init__.py
index d1ae212..3892a55 100644
--- a/adafruit_pycamera/__init__.py
+++ b/adafruit_pycamera/__init__.py
@@ -258,7 +258,7 @@ def make_debounced_expander_pin(pin_no):
 
         self._card_power = make_expander_output(_AW_SDPWR, True)
 
-        self.mute = make_expander_input(_AW_MUTE)
+        self.mute = make_expander_output(_AW_MUTE, False)
 
         self.sdcard = None
         try: