diff --git a/src/main/java/de/ozgcloud/admin/setting/Setting.java b/src/main/java/de/ozgcloud/admin/setting/Setting.java
index 6bf42c624ded3481ee4d976352d8cece48fd6fee..7613af8dc342370ed48bbe86a98247c79c2e2902 100644
--- a/src/main/java/de/ozgcloud/admin/setting/Setting.java
+++ b/src/main/java/de/ozgcloud/admin/setting/Setting.java
@@ -24,6 +24,7 @@ package de.ozgcloud.admin.setting;
 import jakarta.validation.Valid;
 
 import org.springframework.data.annotation.Id;
+import org.springframework.data.annotation.TypeAlias;
 import org.springframework.data.mongodb.core.mapping.Document;
 
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
@@ -37,6 +38,7 @@ import lombok.extern.jackson.Jacksonized;
 @Getter
 @Jacksonized
 @Document(Setting.COLLECTION_NAME)
+@TypeAlias("Setting")
 public class Setting {
 	static final String COLLECTION_NAME = "settings";
 
diff --git a/src/main/java/de/ozgcloud/admin/setting/postfach/PostfachSettingBody.java b/src/main/java/de/ozgcloud/admin/setting/postfach/PostfachSettingBody.java
index 85f55727e2d62161d31ad2a1418c9fd6bf1ce836..43a536c9a5dd81d4bdb8700e3766c804e4cb4463 100644
--- a/src/main/java/de/ozgcloud/admin/setting/postfach/PostfachSettingBody.java
+++ b/src/main/java/de/ozgcloud/admin/setting/postfach/PostfachSettingBody.java
@@ -2,6 +2,9 @@ package de.ozgcloud.admin.setting.postfach;
 
 import jakarta.validation.Valid;
 
+import org.springframework.data.annotation.TypeAlias;
+import org.springframework.data.mongodb.core.mapping.Document;
+
 import de.ozgcloud.admin.setting.SettingBody;
 import lombok.Builder;
 import lombok.Getter;
@@ -10,6 +13,8 @@ import lombok.extern.jackson.Jacksonized;
 @Getter
 @Jacksonized
 @Builder
+@Document
+@TypeAlias("PostfachSettingBody")
 public class PostfachSettingBody implements SettingBody {
 	@Valid
 	private Absender absender;