diff --git a/docs/customisation.md b/docs/customisation.md
index d4883a6bc..d5894e57b 100644
--- a/docs/customisation.md
+++ b/docs/customisation.md
@@ -162,12 +162,6 @@ NOTE: This feature is quite slow and so may need a higher performance machine
 This can help to slightly improve the plan for tariffs like Agile but can make it worse in some fixed rate tariffs which
 you want to discharge late.
 
-**switch.calculate_tweak_plan** (_expert mode_) When True causes Predbat to optimise the next 8 charge/discharge windows
-in time order as a second pass and after every 5 minutes even when the full plan is not re-calculated.
-
-This can help to slightly improve the plan for tariffs like Agile but can make it worse in some fixed rate tariffs
-which you want to discharge late.
-
 ## Battery margins and metrics options
 
 **best_soc_keep** is minimum battery level to try to keep above during the whole period of the simulation time,