diff --git a/nfcbord.cpp b/nfcbord.cpp
index 6b562e8..6340cab 100644
--- a/nfcbord.cpp
+++ b/nfcbord.cpp
@@ -91,7 +91,6 @@ int NfcBoard::dispatch(char* inBuffer, Serial* serial)
 	{
 		serial->write_p(PSTR("Runing tag detection test\n"));
 		bool oldPresent = false;
-		Mfrc522::serial = serial;
 		while(!serial->dataIsWaiting())
 		{
 			bool present = readers[0].cardPresent();
@@ -102,7 +101,9 @@ int NfcBoard::dispatch(char* inBuffer, Serial* serial)
 				serial->write_p(PSTR("Tag found, selecting\n"));
 
 				Mfrc522::Uid uid;
+				Mfrc522::serial = serial;
 				uint8_t res = readers[0].selectTag(&uid);
+				Mfrc522::serial = nullptr;
 				if(res != 0)
 				{
 					serial->write_p(PSTR("Select Failed with "));
@@ -110,9 +111,9 @@ int NfcBoard::dispatch(char* inBuffer, Serial* serial)
 					serial->putChar('\n');
 					continue;
 				}
-				snprintf(buffer, SNPRINTF_BUFFER_SIZE, "Uid: %x %x %x %x %x %x %x %x %x %x\n",
+				/*snprintf(buffer, SNPRINTF_BUFFER_SIZE, "Uid: %x %x %x %x %x %x %x %x %x %x\n",
 						 uid.uidByte[0], uid.uidByte[1], uid.uidByte[2], uid.uidByte[3], uid.uidByte[4],
-						 uid.uidByte[5], uid.uidByte[6], uid.uidByte[7], uid.uidByte[8], uid.uidByte[9]);
+						 uid.uidByte[5], uid.uidByte[6], uid.uidByte[7], uid.uidByte[8], uid.uidByte[9]);*/
 			}
 			else if(!present && oldPresent)
 			{