diff --git a/sechub-administration/src/test/java/com/mercedesbenz/sechub/domain/administration/project/ProjectTemplateServiceTest.java b/sechub-administration/src/test/java/com/mercedesbenz/sechub/domain/administration/project/ProjectTemplateServiceTest.java
index dd9ea0298..57734b61e 100644
--- a/sechub-administration/src/test/java/com/mercedesbenz/sechub/domain/administration/project/ProjectTemplateServiceTest.java
+++ b/sechub-administration/src/test/java/com/mercedesbenz/sechub/domain/administration/project/ProjectTemplateServiceTest.java
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 package com.mercedesbenz.sechub.domain.administration.project;
 
 import static org.assertj.core.api.Assertions.*;
diff --git a/sechub-archunit-test/src/test/java/mercedesbenz/com/sechub/archunit/ArchUnitRuntimeSupport.java b/sechub-archunit-test/src/test/java/mercedesbenz/com/sechub/archunit/ArchUnitRuntimeSupport.java
index 0278ab6b3..b10a49091 100644
--- a/sechub-archunit-test/src/test/java/mercedesbenz/com/sechub/archunit/ArchUnitRuntimeSupport.java
+++ b/sechub-archunit-test/src/test/java/mercedesbenz/com/sechub/archunit/ArchUnitRuntimeSupport.java
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 package mercedesbenz.com.sechub.archunit;
 
 import java.util.*;
diff --git a/sechub-commons-security-spring/src/main/java/com/mercedesbenz/sechub/spring/security/OAuth2JwtPropertiesConfiguration.java b/sechub-commons-security-spring/src/main/java/com/mercedesbenz/sechub/spring/security/OAuth2JwtPropertiesConfiguration.java
index 45845db7a..5c650a8b0 100644
--- a/sechub-commons-security-spring/src/main/java/com/mercedesbenz/sechub/spring/security/OAuth2JwtPropertiesConfiguration.java
+++ b/sechub-commons-security-spring/src/main/java/com/mercedesbenz/sechub/spring/security/OAuth2JwtPropertiesConfiguration.java
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 package com.mercedesbenz.sechub.spring.security;
 
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
diff --git a/sechub-doc/src/docs/asciidoc/diagrams/diagram_templates-and-assets-big-picture.puml b/sechub-doc/src/docs/asciidoc/diagrams/diagram_templates-and-assets-big-picture.puml
index 559f69408..784527827 100644
--- a/sechub-doc/src/docs/asciidoc/diagrams/diagram_templates-and-assets-big-picture.puml
+++ b/sechub-doc/src/docs/asciidoc/diagrams/diagram_templates-and-assets-big-picture.puml
@@ -1,3 +1,4 @@
+' SPDX-License-Identifier: MIT
 @startuml
 
 skinparam linetype ortho
diff --git a/sechub-shared-kernel/src/main/java/com/mercedesbenz/sechub/sharedkernel/security/SecHubSecurityConfiguration.java b/sechub-shared-kernel/src/main/java/com/mercedesbenz/sechub/sharedkernel/security/SecHubSecurityConfiguration.java
index 0f771ba16..0d73e11c6 100644
--- a/sechub-shared-kernel/src/main/java/com/mercedesbenz/sechub/sharedkernel/security/SecHubSecurityConfiguration.java
+++ b/sechub-shared-kernel/src/main/java/com/mercedesbenz/sechub/sharedkernel/security/SecHubSecurityConfiguration.java
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 package com.mercedesbenz.sechub.sharedkernel.security;
 
 import org.springframework.context.annotation.Configuration;