diff --git a/module_usb_midi/src/usb_midi.xc b/module_usb_midi/src/usb_midi.xc
index 2cf751f4..a0a673cb 100644
--- a/module_usb_midi/src/usb_midi.xc
+++ b/module_usb_midi/src/usb_midi.xc
@@ -118,9 +118,10 @@ chanend c_iap, chanend ?c_i2c // iOS stuff
   t :> txT;
   t2 :> rxT;
 
-   //port32A_unset(P32A_I2C_NOTMIDI);
 #ifndef MIDI_LOOPBACK
+  port32A_unset(P32A_I2C_NOTMIDI);
   p_midi_out <: 1; // Start with high bit.
+  port32A_set(P32A_I2C_NOTMIDI);
   //  printstr("mout0");
 #endif