diff --git a/Robust.Client/Properties/AssemblyInfo.cs b/Robust.Client/Properties/AssemblyInfo.cs
index bca503790..dddc3cf2c 100644
--- a/Robust.Client/Properties/AssemblyInfo.cs
+++ b/Robust.Client/Properties/AssemblyInfo.cs
@@ -1,6 +1,7 @@
 using System.Runtime.CompilerServices;
 
 [assembly: InternalsVisibleTo("Robust.UnitTesting")]
+[assembly: InternalsVisibleTo("Robust.Client.CEF")]
 [assembly: InternalsVisibleTo("Robust.Lite")]
 [assembly: InternalsVisibleTo("DynamicProxyGenAssembly2")]
 [assembly: InternalsVisibleTo("Robust.Benchmarks")]
diff --git a/Robust.Shared/Properties/AssemblyInfo.cs b/Robust.Shared/Properties/AssemblyInfo.cs
index 125d836ad..a125ed8c5 100644
--- a/Robust.Shared/Properties/AssemblyInfo.cs
+++ b/Robust.Shared/Properties/AssemblyInfo.cs
@@ -11,6 +11,7 @@
 [assembly: InternalsVisibleTo("DynamicProxyGenAssembly2")] // Gives access to Castle(Moq)
 [assembly: InternalsVisibleTo("Content.Benchmarks")]
 [assembly: InternalsVisibleTo("Robust.Benchmarks")]
+[assembly: InternalsVisibleTo("Robust.Client.CEF")]
 
 #if NET5_0
 [module: SkipLocalsInit]