diff --git a/sechub-developertools/src/main/java/com/mercedesbenz/sechub/developertools/DAUIApplication.java b/sechub-developertools/src/main/java/com/mercedesbenz/sechub/developertools/DAUIApplication.java
index e40241697..4c6ef5ec9 100644
--- a/sechub-developertools/src/main/java/com/mercedesbenz/sechub/developertools/DAUIApplication.java
+++ b/sechub-developertools/src/main/java/com/mercedesbenz/sechub/developertools/DAUIApplication.java
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 package com.mercedesbenz.sechub.developertools;
 
 import org.springframework.boot.autoconfigure.SpringBootApplication;
diff --git a/sechub-developertools/src/main/java/com/mercedesbenz/sechub/developertools/DAUICLIRunner.java b/sechub-developertools/src/main/java/com/mercedesbenz/sechub/developertools/DAUICLIRunner.java
index faba0a26a..76f280444 100644
--- a/sechub-developertools/src/main/java/com/mercedesbenz/sechub/developertools/DAUICLIRunner.java
+++ b/sechub-developertools/src/main/java/com/mercedesbenz/sechub/developertools/DAUICLIRunner.java
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: MIT
 package com.mercedesbenz.sechub.developertools;
 
 import org.springframework.boot.CommandLineRunner;
diff --git a/sechub-developertools/src/main/resources/application.yaml b/sechub-developertools/src/main/resources/application.yaml
index 4b4cc19c9..1c01b2932 100644
--- a/sechub-developertools/src/main/resources/application.yaml
+++ b/sechub-developertools/src/main/resources/application.yaml
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 spring:
   main:
     web-application-type: none # we do not want to start tomcat by DAUI
\ No newline at end of file