diff --git a/src/mhz16/mhz16.h b/src/mhz16/mhz16.h
index 6389aa29..cf5ac400 100644
--- a/src/mhz16/mhz16.h
+++ b/src/mhz16/mhz16.h
@@ -152,7 +152,6 @@ namespace upm {
 
   protected:
     int ttyFd() { return m_ttyFd; };
-    int setTtyFd(int fd) { m_ttyFd = fd; };
 
   private:
     mraa_uart_context m_uart;