diff --git a/mcp_can.cpp b/mcp_can.cpp
index 3aad156..fe57aeb 100644
--- a/mcp_can.cpp
+++ b/mcp_can.cpp
@@ -534,8 +534,8 @@ void MCP_CAN::mcp2515_write_canMsg(const byte buffer_sidh_addr, int rtrBit)
     byte mcp_addr;
     mcp_addr = buffer_sidh_addr;
     mcp2515_setRegisterS(mcp_addr+5, dta, dta_len);                  // write data bytes
-    Serial.print("RTR: ");
-    Serial.println(rtrBit);
+    // Serial.print("RTR: ");
+    // Serial.println(rtrBit);
     if(rtrBit == 1)                                                   // if RTR set bit in byte
     {
         dta_len |= MCP_RTR_MASK;
diff --git a/mcp_can.h b/mcp_can.h
index 19de0e2..2842e88 100644
--- a/mcp_can.h
+++ b/mcp_can.h
@@ -123,7 +123,7 @@ public:
     byte init_Mask(byte num, byte ext, unsigned long ulData);       // init Masks
     byte init_Filt(byte num, byte ext, unsigned long ulData);       // init filters
     byte sendMsgBuf(unsigned long id, byte ext, byte rtr, byte len, byte *buf);     // send buf
-    // byte sendMsgBuf(unsigned long id, byte ext, byte len, byte *buf);               // send buf
+    byte sendMsgBuf(unsigned long id, byte ext, byte len, byte *buf);               // send buf
     byte readMsgBuf(byte *len, byte *buf);                          // read buf
     byte readMsgBufID(unsigned long *ID, byte *len, byte *buf);     // read buf with object ID
     byte checkReceive(void);                                        // if something received