diff --git a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/LibGambatte.cs b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/LibGambatte.cs
index 33f3695d40..f30bf46692 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/LibGambatte.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/LibGambatte.cs
@@ -515,7 +515,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
 		/// <param name="addr">address for memory type</param>
 		/// <param name="bank">bank to set</param>
 		[DllImport("libgambatte", CallingConvention = CallingConvention.Cdecl)]
-		public static extern void gambatte_setbank(IntPtr core, ushort addr, int bank);
+		public static extern void gambatte_setaddrbank(IntPtr core, ushort addr, int bank);
 
 		public enum BankType : int
 		{
diff --git a/src/BizHawk.Tests.Testroms.GB/DummyFrontend.cs b/src/BizHawk.Tests.Testroms.GB/DummyFrontend.cs
index 283631b604..3e2bda0460 100644
--- a/src/BizHawk.Tests.Testroms.GB/DummyFrontend.cs
+++ b/src/BizHawk.Tests.Testroms.GB/DummyFrontend.cs
@@ -238,7 +238,7 @@ namespace BizHawk.Tests.Testroms.GB
 		}
 
 		public Bitmap Screenshot()
-			=> _dispMan.RenderVideoProvider(_coreAsVP).ToSysdrawingBitmap();
+			=> new BitmapBuffer(_coreAsVP.BufferWidth, _coreAsVP.BufferHeight, _coreAsVP.GetVideoBuffer().ToArray()).ToSysdrawingBitmap();
 
 		public void SetButton(string buttonName)
 			=> _controller[buttonName] = true;