diff --git a/swagger.yaml b/swagger.yaml
index 4b58424..e207229 100644
--- a/swagger.yaml
+++ b/swagger.yaml
@@ -55,6 +55,9 @@ paths:
           in: body
           schema:
             type: object
+            required:
+              - worksheet-name
+              - out-filename
             properties:
               infile:
                 type: string
@@ -112,7 +115,7 @@ paths:
         200:
           description: List of executed commands.
           examples:
-            export-excel: "JVBERi0xLjUKJdDUxdgKNSAwIG9iago8PAov=="
+            export-excel: "{\"export-excel\": \"JVBERi0xLjUKJdDUxdgKNSAwIG9iago8PAov==\"}"
           schema:
             type: object
             properties: