diff --git a/CHANGELIST.md b/CHANGELIST.md
index 2f694068..47685258 100644
--- a/CHANGELIST.md
+++ b/CHANGELIST.md
@@ -23,6 +23,7 @@
 - Remove App references from LogViewModel
 - Remove log formatting code
 - Move LogOutput
+- Move to csproj tag for internals
 
 ### 2.6.3 (2023-08-15)
 
diff --git a/MPF/AssemblyInfo.cs b/MPF/AssemblyInfo.cs
deleted file mode 100644
index c6ca6aa9..00000000
--- a/MPF/AssemblyInfo.cs
+++ /dev/null
@@ -1,4 +0,0 @@
-using System.Runtime.CompilerServices;
-
-// Anything marked as internal can be used by the test methods
-[assembly: InternalsVisibleTo("MPF.Test")]
\ No newline at end of file
diff --git a/MPF/MPF.csproj b/MPF/MPF.csproj
index 71b5a6c9..6240f925 100644
--- a/MPF/MPF.csproj
+++ b/MPF/MPF.csproj
@@ -18,6 +18,7 @@
     <FileVersion>$(Version)</FileVersion>
     <IncludeSource>true</IncludeSource>
     <IncludeSymbols>true</IncludeSymbols>
+    <InternalsVisibleTo>MPF.Test</InternalsVisibleTo>
   </PropertyGroup>
 
   <PropertyGroup>