diff --git a/doc/android/fastboot.rst b/doc/android/fastboot.rst
index 1ad8a89..933a652 100644
--- a/doc/android/fastboot.rst
+++ b/doc/android/fastboot.rst
@@ -127,6 +127,7 @@
 
 When executing the fastboot ``boot`` command, if ``fastboot_bootcmd`` is set
 then that will be executed in place of ``bootm <CONFIG_FASTBOOT_BUF_ADDR>``.
+This is supported if CONFIG_CMDLINE is enabled, which it normally is.
 
 Partition Names
 ---------------