diff --git a/src/emu/diserial.cpp b/src/emu/diserial.cpp
index 5f7c00b7e59..fc4ef795159 100644
--- a/src/emu/diserial.cpp
+++ b/src/emu/diserial.cpp
@@ -226,8 +226,10 @@ void device_serial_interface::rx_w(int state)
 	{
 		LOGMASKED(LOG_RX, "Receiver is synchronized\n");
 		if (m_rcv_clock && !(m_rcv_rate.is_never()))
+		{
 			// make start delay just a bit longer to make sure we are called after the sender
-			m_rcv_clock->adjust(((m_rcv_rate*3)/2), 0, m_rcv_rate);
+			m_rcv_clock->adjust(((m_rcv_rate*5)/3), 0, m_rcv_rate);
+		}
 		else if (m_start_bit_hack_for_external_clocks)
 			m_rcv_bit_count_received--;
 	}
diff --git a/src/mame/novag/sdiamond.cpp b/src/mame/novag/sdiamond.cpp
index 5d4c728aa55..7c24777eac7 100644
--- a/src/mame/novag/sdiamond.cpp
+++ b/src/mame/novag/sdiamond.cpp
@@ -21,8 +21,6 @@ TODO:
 - add internal artwork
 - it does a cold boot at every reset, so nvram won't work properly unless MAME
   adds some kind of auxillary autosave state feature at power-off
-- serial comms doesn't work, 25MHz XTAL is correct and the SCI baud rate is
-  configured as close as it can get to 57600, but it still desyncs quickly
 
 *******************************************************************************/