diff --git a/gamedir/Data-1.13/Ja2_Options.INI b/gamedir/Data-1.13/Ja2_Options.INI
index cef0f34c1..654ae09b6 100644
--- a/gamedir/Data-1.13/Ja2_Options.INI
+++ b/gamedir/Data-1.13/Ja2_Options.INI
@@ -1801,6 +1801,10 @@ ALL_NAMED_NPCS_DECIDE_ACTION = FALSE
 ; allow accessing other mercs inventories. This works just like stealing, but on your teammembers, even when they are dying or unconscious
 ACCESS_OTHER_MERC_INVENTORIES = TRUE
 
+; Get an AP penalty for filled backpacks. This includes the weight of the backpack itself
+; 1 AP penalty for each 5kg of weight up to the penalty defined by AP_MODIFIER_PACK (default = 4)
+BACKPACKWEIGHT_LOWERS_AP = FALSE
+
 ;******************************************************************************************************************************
 ;******************************************************************************************************************************