diff --git a/src/ReC.Domain/Attributes/MustConfiguredAttribute.cs b/src/ReC.Domain/Attributes/MustConfiguredAttribute.cs
new file mode 100644
index 0000000..a15e585
--- /dev/null
+++ b/src/ReC.Domain/Attributes/MustConfiguredAttribute.cs
@@ -0,0 +1,6 @@
+namespace ReC.Domain.Attributes;
+
+[AttributeUsage(AttributeTargets.Property)]
+public class MustConfiguredAttribute : Attribute
+{
+}
diff --git a/src/ReC.Domain/ReC.Domain.csproj b/src/ReC.Domain/ReC.Domain.csproj
index b3c6218..fa71b7a 100644
--- a/src/ReC.Domain/ReC.Domain.csproj
+++ b/src/ReC.Domain/ReC.Domain.csproj
@@ -6,8 +6,4 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
-  <ItemGroup>
-    <Folder Include="Attributes\" />
-  </ItemGroup>
-
 </Project>