diff --git a/code/modules/mod/mod_activation.dm b/code/modules/mod/mod_activation.dm
index 12de6ac26d7..cfcc838ee09 100644
--- a/code/modules/mod/mod_activation.dm
+++ b/code/modules/mod/mod_activation.dm
@@ -283,7 +283,7 @@
 		for(var/obj/item/mod/module/module as anything in modules)
 			if(module.part_activated || !module.has_required_parts(mod_parts, need_active = TRUE))
 				continue
-				module.on_part_activation()
+			module.on_part_activation()
 			module.part_activated = TRUE
 	else
 		for(var/obj/item/mod/module/module as anything in modules)
@@ -304,11 +304,13 @@
 		for(var/obj/item/mod/module/module as anything in modules)
 			if(!module.part_activated && module.has_required_parts(mod_parts, need_active = TRUE))
 				module.on_part_activation()
+				module.part_activated = TRUE
 	else
 		for(var/obj/item/mod/module/module as anything in modules)
 			if(!module.part_activated)
 				continue
 			module.on_part_deactivation()
+			module.part_activated = FALSE
 	update_charge_alert()
 	update_appearance(UPDATE_ICON_STATE)
 	wearer.update_clothing()