diff --git a/spec/headers/hmac-cb-authentication.yaml b/spec/headers/hmac-cb-authentication.yaml
index 7e23d97e7abd7f1464ec9211d9a38c8fb0f5b94a..6932a8d1c69e73596eef81987202a00ab38a7a73 100644
--- a/spec/headers/hmac-cb-authentication.yaml
+++ b/spec/headers/hmac-cb-authentication.yaml
@@ -1,5 +1,5 @@
 in: header
-name: 'callback-authentication'
+name: 'Callback-Authentication'
 required: true
 description: Der Message Authentication Code des übertragenen Callbacks
 schema:
diff --git a/spec/headers/hmac-cb-timestamp.yaml b/spec/headers/hmac-cb-timestamp.yaml
index d23d6958ec00b015627faec0c00c2f0b9ed9f7dc..48ddfbb54054869942960e64b370ef18038fcf1b 100644
--- a/spec/headers/hmac-cb-timestamp.yaml
+++ b/spec/headers/hmac-cb-timestamp.yaml
@@ -1,5 +1,5 @@
 in: header
-name: 'callback-timestamp'
+name: 'Callback-Timestamp'
 required: true
 description: Der Timestamp des Message Authentication Code.
 schema: