diff --git a/qos_identifiers.adoc b/qos_identifiers.adoc
index fb41dc1..e5ee020 100644
--- a/qos_identifiers.adoc
+++ b/qos_identifiers.adoc
@@ -34,7 +34,7 @@ etc.). Two modes of operation are supported by CBQRI. In the direct mode, the
 `MCID` carried with the request is directly used by the controller to identify
 the counter and is the effective `MCID`. In the RCID-prefixed mode, the
 controller identifies the counter for monitoring using an effective `MCID`
-computed as: Effective-MCID = (`RCID` << `P`) | (`MCID` & ((1 << `P`) - 1)).
+computed as: Effective-MCID = (`RCID` << `P`) | (`MCID` & \(\(1 << `P`\) - 1\)\).
 
 Legal values of `P` range from 0 to 12 and are enumerated in the capability
 register of the controller. Software should use the effective `MCID` as the