diff --git a/src/hm11/hm11.h b/src/hm11/hm11.h
index 4b59f5f2..29e43194 100644
--- a/src/hm11/hm11.h
+++ b/src/hm11/hm11.h
@@ -134,7 +134,6 @@ namespace upm {
 
   protected:
     int ttyFd() { return m_ttyFd; };
-    int setTtyFd(int fd) { m_ttyFd = fd; };
 
   private:
     mraa_uart_context m_uart;