Index: OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj
--- OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj.orig
+++ OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj
@@ -3,7 +3,7 @@
     <TargetFramework>net472</TargetFramework>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <Optimize>true</Optimize>
-    <LangVersion>7.3</LangVersion>
+    <LangVersion>7.2</LangVersion>
     <DebugSymbols>true</DebugSymbols>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <OutputPath>../bin</OutputPath>
