diff --git a/components/binary_sensor/rdm6300.rst b/components/binary_sensor/rdm6300.rst
index c28dcd754..11b102e6f 100644
--- a/components/binary_sensor/rdm6300.rst
+++ b/components/binary_sensor/rdm6300.rst
@@ -68,7 +68,7 @@ unsigned integer.
         then:
           - mqtt.publish:
               topic: rdm6300/tag
-              payload: !lambda 'return uint32_to_string(x);'
+              payload: !lambda 'return to_string(x);'
 
 A tag scanned event can also be sent to the Home Assistant tag component
 using :ref:`api-homeassistant_tag_scanned_action`.
@@ -79,7 +79,7 @@ using :ref:`api-homeassistant_tag_scanned_action`.
       # ...
       on_tag:
         then:
-          - homeassistant.tag_scanned: !lambda 'return uint32_to_string(x);'
+          - homeassistant.tag_scanned: !lambda 'return to_string(x);'
 
 .. _rdm6300-tag: