diff --git a/jans-fido2/model/src/main/java/io/jans/fido2/ctap/AttestationFormat.java b/jans-fido2/model/src/main/java/io/jans/fido2/ctap/AttestationFormat.java
index b4732a46816..6618478adb6 100644
--- a/jans-fido2/model/src/main/java/io/jans/fido2/ctap/AttestationFormat.java
+++ b/jans-fido2/model/src/main/java/io/jans/fido2/ctap/AttestationFormat.java
@@ -8,8 +8,8 @@
 
 public enum AttestationFormat {
 
-    fido_u2f("fido-u2f"), packed("packed"), tpm("tpm"), android_key("android-key"), android_safetynet("android-safetynet"), none("none"), apple("apple"),
-    fido_u2f_super_gluu("fido-u2f-super-gluu");
+    fido_u2f("fido_u2f"), packed("packed"), tpm("tpm"), android_key("android-key"), android_safetynet("android-safetynet"), none("none"), apple("apple"),
+    fido_u2f_super_gluu("fido_u2f_super_gluu");
 
     private final String fmt;