diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index cfd7201..79159b7 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -982,10 +982,11 @@
   functions that wait for an arbitrary time length (udelay and mdelay). The
   default value is 0.
 
-- ``ENABLE_BRBE_FOR_NS``: This flag enables access to the branch record buffer
-  registers from NS ELs when FEAT_BRBE is implemented. BRBE is an optional
-  architectural feature for AArch64. The default is 0 and it is automatically
-  disabled when the target architecture is AArch32.
+- ``ENABLE_BRBE_FOR_NS``: Numeric value to enable access to the branch record
+  buffer registers from NS ELs when FEAT_BRBE is implemented. BRBE is an
+  optional architectural feature for AArch64. This flag can take the values
+  0 to 2, to align with the ``FEATURE_DETECTION`` mechanism. The default is 0
+  and it is automatically disabled when the target architecture is AArch32.
 
 - ``ENABLE_TRBE_FOR_NS``: This flag is used to enable access of trace buffer
   control registers from NS ELs, NS-EL2 or NS-EL1(when NS-EL2 is implemented