diff --git a/ArchUnitNET/Loader/TypeFactory.cs b/ArchUnitNET/Loader/TypeFactory.cs
index e21770aa4..240598597 100644
--- a/ArchUnitNET/Loader/TypeFactory.cs
+++ b/ArchUnitNET/Loader/TypeFactory.cs
@@ -347,7 +347,7 @@ TypeReference typeReference
         )
         {
             var assemblyQualifiedName = System.Reflection.Assembly.CreateQualifiedName(
-                typeReference.Module.Assembly.FullName,
+                typeReference.Scope.Name,
                 typeReference.BuildFullName()
             );
             if (_allTypes.TryGetValue(assemblyQualifiedName, out var existingTypeInstance))
@@ -361,8 +361,8 @@ TypeReference typeReference
                         typeReference.BuildFullName(),
                         typeReference.Name,
                         _assemblyRegistry.GetOrCreateAssembly(
-                            typeReference.Module.Assembly.Name.Name,
-                            typeReference.Module.Assembly.FullName,
+                            typeReference.Scope.Name,
+                            typeReference.Scope.ToString(),
                             true,
                             null
                         ),
diff --git a/ArchUnitNETTests/Loader/ArchLoaderTests.cs b/ArchUnitNETTests/Loader/ArchLoaderTests.cs
index 31aaacdc6..5d9408025 100644
--- a/ArchUnitNETTests/Loader/ArchLoaderTests.cs
+++ b/ArchUnitNETTests/Loader/ArchLoaderTests.cs
@@ -131,8 +131,8 @@ public void TypesAreAssignedToCorrectAssemblies()
         public void UnavailableTypeTest()
         {
             // When loading an assembly from a file, there are situations where the assemblies dependencies are not
-            // available in the current AppDomain. This test checks that the loader does not throw an exception in this
-            // case.
+            // available in the current AppDomain. This test checks that the loader does not throw an exception
+            // and that the unavailable types contain the correct assembly they come from.
             var currentAssemblyPath = AppDomain.CurrentDomain.BaseDirectory[
                 ..AppDomain.CurrentDomain.BaseDirectory.IndexOf(
                     @"ArchUnitNETTests",
@@ -153,6 +153,7 @@ public void UnavailableTypeTest()
             var loggerType = architecture.ReferencedTypes.WhereFullNameIs("Serilog.ILogger");
             Assert.NotNull(loggerType);
             Assert.True(loggerType is UnavailableType);
+            Assert.Equal("Serilog", loggerType.Assembly.Name);
         }
     }
 }