diff --git a/src/BizHawk.Bizware.Input/KeyInput/QuartzKeyInput.cs b/src/BizHawk.Bizware.Input/KeyInput/QuartzKeyInput.cs
index ee442ad068..cb7191eb6d 100644
--- a/src/BizHawk.Bizware.Input/KeyInput/QuartzKeyInput.cs
+++ b/src/BizHawk.Bizware.Input/KeyInput/QuartzKeyInput.cs
@@ -1,6 +1,5 @@
 #nullable enable
 
-using System;
 using System.Collections.Generic;
 
 using BizHawk.Client.Common;
diff --git a/src/BizHawk.Common/macOS/QuartzImports.cs b/src/BizHawk.Common/macOS/QuartzImports.cs
index 86b15c325c..f2bdef4a15 100644
--- a/src/BizHawk.Common/macOS/QuartzImports.cs
+++ b/src/BizHawk.Common/macOS/QuartzImports.cs
@@ -1,6 +1,5 @@
 #nullable enable
 
-using System;
 using System.Runtime.InteropServices;
 
 namespace BizHawk.Common
diff --git a/src/BizHawk.Emulation.Cores/Consoles/WonderSwan/WonderSwan.IStatable.cs b/src/BizHawk.Emulation.Cores/Consoles/WonderSwan/WonderSwan.IStatable.cs
index d778c2504a..427d4fd14c 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/WonderSwan/WonderSwan.IStatable.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/WonderSwan/WonderSwan.IStatable.cs
@@ -1,11 +1,10 @@
 using System;
 using System.IO;
+using System.Runtime.InteropServices;
+
 using Newtonsoft.Json;
 
-using BizHawk.Common;
 using BizHawk.Emulation.Common;
-using System.Runtime.InteropServices;
-using BizHawk.Common.IOExtensions;
 
 namespace BizHawk.Emulation.Cores.WonderSwan
 {