diff --git a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/config/Osi2PostfachProperties.java b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/config/Osi2PostfachProperties.java
index 2cf55ad4c59d005f1fdbb45e2ff2fbaff5b4342f..f5a3d44421b73db9566abbe773b7d2d54fc28b84 100644
--- a/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/config/Osi2PostfachProperties.java
+++ b/src/main/java/de/ozgcloud/nachrichten/postfach/osiv2/config/Osi2PostfachProperties.java
@@ -7,23 +7,29 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.context.annotation.Configuration;
 
 import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 import lombok.Setter;
 
 @Getter
 @Setter
 @Configuration
 @ConditionalOnProperty(prefix = Osi2PostfachProperties.PREFIX, name = "enabled", havingValue = "true")
+@RequiredArgsConstructor
 public class Osi2PostfachProperties {
 
 	public static final String PREFIX = "ozgcloud.osiv2-postfach";
 
 	private boolean enabled;
 
+	private final ApiConfiguration api;
+
+	private final ProxyConfiguration httpProxy;
+
 	@Getter
 	@Setter
 	@Configuration
 	@ConfigurationProperties(prefix = ApiConfiguration.PREFIX)
-	static class ApiConfiguration {
+	public static class ApiConfiguration {
 		static final String PREFIX = Osi2PostfachProperties.PREFIX + ".api";
 
 		private String resource;
@@ -40,7 +46,7 @@ public class Osi2PostfachProperties {
 	@Setter
 	@Configuration
 	@ConfigurationProperties(prefix = ProxyConfiguration.PREFIX)
-	static class ProxyConfiguration {
+	public static class ProxyConfiguration {
 		static final String PREFIX = Osi2PostfachProperties.PREFIX + ".http-proxy";
 
 		private boolean enabled;