diff --git a/src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS/FocasDriver.cs b/src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS/FocasDriver.cs
index 7aeda5ea..76a37e81 100644
--- a/src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS/FocasDriver.cs
+++ b/src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS/FocasDriver.cs
@@ -843,8 +843,8 @@ public sealed class FocasDriver : IDriver, IReadable, IWritable, ITagDiscovery,
 
     /// <summary>
     ///     Cache servo-load percentages keyed by axis name. Stored separately from
-    ///     <c>LastFixedSnapshots</c> (which is int-typed) so the double-valued load
-    ///     values don't need casting on every read.
+    ///     <c>LastFixedSnapshots</c> (which is keyed by full-reference) because the
+    ///     servo-load read path resolves by axis name.
     /// </summary>
     private static void PublishServoLoads(DeviceState state, IReadOnlyList<FocasServoLoad> loads)
     {