diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.IEmulator.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.IEmulator.cs
index 1cebe9f5b4..dee9cfa0e3 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.IEmulator.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.IEmulator.cs
@@ -100,7 +100,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawkLink
 				R.do_single_step();
 
 				// the signal to shift out a bit is when serial_clock = 1
-				if ((L.serialport.serial_clock == 1) || (L.serialport.serial_clock == 2))
+				if (((L.serialport.serial_clock == 1) || (L.serialport.serial_clock == 2)) && !do_r_next)
 				{
 					if (LinkConnected)
 					{
@@ -118,6 +118,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawkLink
 				}
 				else if ((R.serialport.serial_clock == 1) || (R.serialport.serial_clock == 2))
 				{
+					do_r_next = false;
+
 					if (LinkConnected)
 					{
 						R.serialport.send_external_bit((byte)(R.serialport.serial_data & 0x80));
@@ -131,6 +133,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawkLink
 
 						R.serialport.coming_in = L.serialport.going_out;
 					}
+
+					if (R.serialport.serial_clock == 2) { do_r_next = true; }
+				}
+				else
+				{
+					do_r_next = false;
 				}
 
 				// if we hit a frame boundary, update video
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.IStatable.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.IStatable.cs
index 5429566225..7b3049f1e2 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.IStatable.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.IStatable.cs
@@ -59,6 +59,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawkLink
 			ser.Sync("IsLag", ref _islag);
 			ser.Sync("_cableconnected", ref _cableconnected);
 			ser.Sync("_cablediscosignal", ref _cablediscosignal);
+			ser.Sync("do_r_next", ref do_r_next);
 			_controllerDeck.SyncState(ser);
 
 			LinkConnected = _cableconnected;
diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.cs
index d007d533fb..619a17c479 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawkLink/GBHawkLink.cs
@@ -30,6 +30,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawkLink
 		// if true, the link cable toggle signal is currently asserted
 		private bool _cablediscosignal = false;
 
+		private bool do_r_next = false;
+
 		//[CoreConstructor("GB", "GBC")]
 		public GBHawkLink(CoreComm comm, GameInfo game_L, byte[] rom_L, GameInfo game_R, byte[] rom_R, /*string gameDbFn,*/ object settings, object syncSettings)
 		{