diff --git a/src/Riok.Mapperly.Abstractions/MapperAttribute.cs b/src/Riok.Mapperly.Abstractions/MapperAttribute.cs
index 9fc533769a..2f73dcd219 100644
--- a/src/Riok.Mapperly.Abstractions/MapperAttribute.cs
+++ b/src/Riok.Mapperly.Abstractions/MapperAttribute.cs
@@ -3,9 +3,9 @@
 namespace Riok.Mapperly.Abstractions;
 
 /// <summary>
-/// Marks an abstract class or an interface as a mapper.
+/// Marks a partial class as a mapper.
 /// </summary>
-[AttributeUsage(AttributeTargets.Interface | AttributeTargets.Class)]
+[AttributeUsage(AttributeTargets.Class)]
 public sealed class MapperAttribute : Attribute
 {
     /// <summary>