diff --git a/src/doc/table-json-conversion/specs.rst b/src/doc/table-json-conversion/specs.rst
index c98eddc1180f552f1d2389b1bb57979e93550ab8..62c75a7055a4f2f07441a036e14b5fd5fe9b9256 100644
--- a/src/doc/table-json-conversion/specs.rst
+++ b/src/doc/table-json-conversion/specs.rst
@@ -181,7 +181,7 @@ a. Properties with primitive data types
            "date": "2023-06-15",
            "url": "www.indiscale.com/next",
            "duration": 2.5,
-           "participants": None,
+           "participants": null,
            "remote": true
          }
        ]