diff --git a/src/main/resources/banner.txt b/src/main/resources/banner.txt
new file mode 100644
index 0000000..9c561e8
--- /dev/null
+++ b/src/main/resources/banner.txt
@@ -0,0 +1,5 @@
+____________________    __     ___       _________________________________________________
+___  ____/__  __ \_ |  / /     __ |     / /__  __ \__    |__  __ \__  __ \__  ____/__  __ \
+__  __/  __  /_/ /_ | / /________ | /| / /__  /_/ /_  /| |_  /_/ /_  /_/ /_  __/  __  /_/ /
+_  /___  _  _, _/__ |/ /_/_____/_ |/ |/ / _  _, _/_  ___ |  ____/_  ____/_  /___  _  _, _/
+/_____/  /_/ |_| _____/        ____/|__/  /_/ |_| /_/  |_/_/     /_/     /_____/  /_/ |_|
diff --git a/src/test/java/de/bund/digitalservice/a2j/security/CallbackVerificationFilterTest.java b/src/test/java/de/bund/digitalservice/a2j/security/CallbackVerificationFilterTest.java
index c05fe8c..af30744 100644
--- a/src/test/java/de/bund/digitalservice/a2j/security/CallbackVerificationFilterTest.java
+++ b/src/test/java/de/bund/digitalservice/a2j/security/CallbackVerificationFilterTest.java
@@ -22,7 +22,7 @@
 import org.springframework.test.context.junit.jupiter.SpringExtension;
 
 @ExtendWith(SpringExtension.class)
-public class CallbackVerificationFilterTest {
+class CallbackVerificationFilterTest {
 
   private CallbackVerificationFilter filter;
   private MockHttpServletRequest request;