diff --git a/specification/_json_spec/indices.get_data_stream_settings.json b/specification/_json_spec/indices.get_data_stream_settings.json
index c71529e785..d9590196ff 100644
--- a/specification/_json_spec/indices.get_data_stream_settings.json
+++ b/specification/_json_spec/indices.get_data_stream_settings.json
@@ -26,8 +26,7 @@
     "params": {
       "master_timeout": {
         "type": "time",
-        "description": "Period to wait for a connection to the master node",
-        "default": "30s"
+        "description": "Period to wait for a connection to the master node"
       }
     }
   }
diff --git a/specification/_json_spec/indices.put_data_stream_settings.json b/specification/_json_spec/indices.put_data_stream_settings.json
index 67207e0e5d..2bc0c435b5 100644
--- a/specification/_json_spec/indices.put_data_stream_settings.json
+++ b/specification/_json_spec/indices.put_data_stream_settings.json
@@ -31,13 +31,11 @@
       },
       "timeout": {
         "type": "time",
-        "description": "Period to wait for a response",
-        "default": "30s"
+        "description": "Period to wait for a response"
       },
       "master_timeout": {
         "type": "time",
-        "description": "Period to wait for a connection to the master node",
-        "default": "30s"
+        "description": "Period to wait for a connection to the master node"
       }
     },
     "body": {