diff --git a/reference/1_sender.json b/reference/1_sender.json
index c6bc47119634e6d1a07e802a1980dc500977d63b..617f1962d50a3ccdc4557de7835f774baa8be775 100644
--- a/reference/1_sender.json
+++ b/reference/1_sender.json
@@ -90,7 +90,7 @@
                       ],
                       "schemas": [
                         {
-                          "mimeType": "json",
+                          "mimeType": "applicaton/json",
                           "schemaSource": "none",
                           "encoding": "plain"
                         }
@@ -796,7 +796,7 @@
                     "contentStructure": {
                       "data": {
                         "schema": {
-                          "mimeType": "json",
+                          "mimeType": "applicaton/json",
                           "schemaSource": "none",
                           "encoding": "plain"
                         }