diff --git a/rom5x/options/accel_reverse/B1_FDD5_accel_reverse.s b/rom5x/options/obsolete/accel_reverse/B1_FDD5_accel_reverse.s
similarity index 69%
rename from rom5x/options/accel_reverse/B1_FDD5_accel_reverse.s
rename to rom5x/options/obsolete/accel_reverse/B1_FDD5_accel_reverse.s
index 46eb0ac..ac2f3bc 100644
--- a/rom5x/options/accel_reverse/B1_FDD5_accel_reverse.s
+++ b/rom5x/options/obsolete/accel_reverse/B1_FDD5_accel_reverse.s
@@ -1,3 +1,6 @@
+; *** This option only works with the orginial Apple accelerator ***
+; *** code.  Do not apply this option to the current release.    ***
+
 ; this reverses the accelerator to always start off at 1MHz
 ; <ESC> at reset then selects 4 MHz
 ; This is useful if you spend more time at 1 MHz, for games