diff --git a/module_usb_aud_shared/i2c/i2c.h b/module_usb_aud_shared/i2c/i2c.h
index 9c10f969..6248e914 100644
--- a/module_usb_aud_shared/i2c/i2c.h
+++ b/module_usb_aud_shared/i2c/i2c.h
@@ -1,10 +1,4 @@
 
-// Channel interface
-void I2cRegWriteC(int deviceAdrs, int Adrs, int WrData,  chanend c);
-
-int I2cRegReadC(int deviceAdrs, int Adrs, chanend c);
-
-// Function interface
 void I2cRegWrite(int deviceAdrs, int Adrs, int WrData,  port AUD_SCLK, port AUD_SDIN);
 
 int I2cRegRead(int deviceAdrs, int Adrs, port AUD_SCLK, port AUD_SDIN);
diff --git a/module_usb_aud_shared/i2c/i2c.xc b/module_usb_aud_shared/i2c/i2c.xc
index 48632445..fd252260 100755
--- a/module_usb_aud_shared/i2c/i2c.xc
+++ b/module_usb_aud_shared/i2c/i2c.xc
@@ -1,28 +1,6 @@
 #include <xs1.h>
 #include <print.h>
 
-int I2cRegReadC(int device, int addr, chanend c) {
-   int read;
-   int retVal;
-   c <: 0; // isWrite
-   c <: device;
-   c <: addr;
-   c <: 1; // only ever one byte
-   c :> read;
-   c :> retVal;
-   return read;
-}
-
-void I2cRegWriteC(int device, int addr, int data, chanend c) {
-   int retVal;
-   c <: 1; // isWrite
-   c <: device;
-   c <: addr;
-   c <: 1; // only ever one byte
-   c <: data;
-   c :> retVal;
-}
-
 int I2cRegRead(int device, int addr, port scl, port sda)
 {
     //int Result;