diff --git a/ChangeLog b/ChangeLog
index 167863dd..5d6b3b72 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -24380,3 +24380,6 @@
 2023-08-25 Fred Gleason <fredg@paravelsystems.com>
 	* Fixed a bug in the 'RDSvc::remove()' method that failed to remove
 	records from the 'USER_SERVICE_PERMS' table.
+2023-08-25 Fred Gleason <fredg@paravelsystems.com>
+	* Fixed an error in the invocation specification for the
+	'Insert Cart' ['PX'] RML in the Operations Guide.
diff --git a/docs/opsguide/rml.xml b/docs/opsguide/rml.xml
index 5f3d085e..6d603d65 100644
--- a/docs/opsguide/rml.xml
+++ b/docs/opsguide/rml.xml
@@ -1113,8 +1113,8 @@
       <userinput>PX
       <replaceable>mach</replaceable>
       <replaceable>cart</replaceable>
-      [<replaceable>offset</replaceable>]
-      [PLAY|SEGUE|STOP]!</userinput>
+      [<replaceable>offset</replaceable>
+      [PLAY|SEGUE|STOP]]!</userinput>
     </para>
     <para>
       Insert cart <replaceable>cart</replaceable> after the currently playing