diff --git a/core/src/main/java/org/mapstruct/MapperConfig.java b/core/src/main/java/org/mapstruct/MapperConfig.java
index eb4b4197b..5a4b7bccf 100644
--- a/core/src/main/java/org/mapstruct/MapperConfig.java
+++ b/core/src/main/java/org/mapstruct/MapperConfig.java
@@ -33,8 +33,8 @@ import org.mapstruct.factory.Mappers;
  *
  * @author Sjaak Derksen
  */
-@Target( { ElementType.TYPE } )
-@Retention(RetentionPolicy.SOURCE)
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.CLASS)
 public @interface MapperConfig {
 
     /**