diff --git a/Commands.md b/Commands.md
index d5ccbee1..768b230f 100644
--- a/Commands.md
+++ b/Commands.md
@@ -105,7 +105,7 @@ FanSpeed         | -            | (iFan02 only) Decrement fan speed
 Interlock        |              | Show current relay interlock mode and group selection(s)                  | 6.4.1.11
 Interlock        | 0 / off      | (default) Set self-locking mode for all relays                            | 6.4.1.11
 Interlock        | 1 / on       | Set interlock mode for selected relays                                    | 6.4.1.11
-Interlock        | 1,2 3,4      | Select relays 1 and 2 and 3 and 4 in two interlock groups                 | 6.4.1.11
+Interlock        | 1,2 3,4      | Select relays 1 and 2 and 3 and 4 in two interlock groups (note the space between the two group declarations)  | 6.4.1.11
 Interlock        | 1,2,3        | Select relays 1, 2 and 3 in one interlock group                           | 6.4.1.11
 LedPower         |              | Show current led power state as On or Off
 LedPower         | 0 / off      | Turn led AND LedState Off