diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index f673c00b..75a35680 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -2,6 +2,12 @@
  
 # Release Notes api-ti-messenger
 
+## Hotfix 1.1.1-6
+
+### fixed
+
+- Fixed formatting issue in the api yaml, that prevented automated code generation.
+
 ## Hotfix 1.1.1-5
 
 ### added
diff --git a/src/openapi/TiMessengerTestTreiber.yaml b/src/openapi/TiMessengerTestTreiber.yaml
index 08fa41ba..31142bf1 100644
--- a/src/openapi/TiMessengerTestTreiber.yaml
+++ b/src/openapi/TiMessengerTestTreiber.yaml
@@ -786,7 +786,7 @@ paths:
           description: "MxId of account"
           schema:
             type: string
-            example: @someone:gematik.de
+            example: "@someone:gematik.de"
 
       responses:
         "200":