diff --git a/BizHawk.Client.EmuHawk/BizHawk.Client.EmuHawk.csproj b/BizHawk.Client.EmuHawk/BizHawk.Client.EmuHawk.csproj
index 2251812747..fbfcb642fe 100644
--- a/BizHawk.Client.EmuHawk/BizHawk.Client.EmuHawk.csproj
+++ b/BizHawk.Client.EmuHawk/BizHawk.Client.EmuHawk.csproj
@@ -38,6 +38,7 @@
     <BootstrapperEnabled>true</BootstrapperEnabled>
     <ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>None</ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <LangVersion>8.0</LangVersion>
   </PropertyGroup>
   <PropertyGroup>
     <ApplicationManifest>app.manifest</ApplicationManifest>
diff --git a/BizHawk.Client.EmuHawk/EmuHawkUtil.cs b/BizHawk.Client.EmuHawk/EmuHawkUtil.cs
index 41ed03e16f..3bd9ea51b3 100644
--- a/BizHawk.Client.EmuHawk/EmuHawkUtil.cs
+++ b/BizHawk.Client.EmuHawk/EmuHawkUtil.cs
@@ -12,7 +12,7 @@ namespace BizHawk.Client.EmuHawk
 	{
 		public static bool EnsureCoreIsAccurate(IEmulator emulator)
 		{
-			bool PromptToSwitchCore(string currentCore, string recommendedCore, Action disableCurrentCore)
+			static bool PromptToSwitchCore(string currentCore, string recommendedCore, Action disableCurrentCore)
 			{
 				var box = new MsgBox(
 					$"While the {currentCore} core is faster, it is not nearly as accurate as {recommendedCore}.{Environment.NewLine}It is recommended that you switch to the {recommendedCore} core for movie recording. {Environment.NewLine}Switch to {recommendedCore}?",