diff --git a/sys/boot/i386/loader/help.i386 b/sys/boot/i386/loader/help.i386
index 4e4ec8bb2b27..8a5e2b133ec8 100644
--- a/sys/boot/i386/loader/help.i386
+++ b/sys/boot/i386/loader/help.i386
@@ -1,3 +1,17 @@
+################################################################################
+# TACPI DControl ACPI module behaviour
+
+	$acpi_load
+
+	If set, the ACPI module will be loaded.  Clear it with
+
+	unset acpi_load
+
+	Note that the ACPI autodetection sets a number of hints to
+	pass information to the ACPI module.  These should not be 
+	overridden, or system behaviour will be undefined.
+
+
 ################################################################################
 # Treboot DReboot the system