diff --git a/canopen/sphinx/user-guide/master.rst b/canopen/sphinx/user-guide/master.rst
index 660f25c9..f02c921b 100644
--- a/canopen/sphinx/user-guide/master.rst
+++ b/canopen/sphinx/user-guide/master.rst
@@ -28,9 +28,6 @@ Services
   * - ~/write_sdo
     - COWriteID
     - Writes Data to an SDO object specified by Index, Subindex and Datatype on the device with the specified nodeid.
-  * - ~/set_heartbeat
-    - COHeartbeatID
-    - Sets the heartbeat of the device with the specified nodeid to the heartbeat value (ms)
   * - ~/set_nmt
     - CONmtID
     - Sends the NMT command to the device with the specified nodeid