diff --git a/Upgrade.lua b/Upgrade.lua
index 71c2525..7db31de 100755
--- a/Upgrade.lua
+++ b/Upgrade.lua
@@ -12,6 +12,8 @@ local BASE_AI_STATE_DORMANT = constants.BASE_AI_STATE_DORMANT
 local INTERVAL_LOGIC = constants.INTERVAL_LOGIC
 local CHUNK_SIZE = constants.CHUNK_SIZE
 
+local ATTACK_SCORE = constants.ATTACK_SCORE
+
 local SQUAD_GUARDING = constants.SQUAD_GUARDING
 
 -- imported functions
@@ -242,16 +244,14 @@ function upgrade.attempt(natives)
         game.surfaces[natives.activeSurface].print("Rampant - Version 0.16.37")
 	global.version = constants.VERSION_72
     end
-    if (global.version < constants.VERSION_74) then
+    if (global.version < constants.VERSION_75) then
 
         for _,squad in pairs(natives.squads) do
-	    squad.status = SQUAD_GUARDING
-            squad.cycles = 0
-            squad.attackScoreFunction = nil
+            squad.attackScoreFunction = ATTACK_SCORE
     	end
 
-        game.surfaces[natives.activeSurface].print("Rampant - Version 0.16.39")
-	global.version = constants.VERSION_74
+        game.surfaces[natives.activeSurface].print("Rampant - Version 0.16.40")
+	global.version = constants.VERSION_75
     end
 
     return starting ~= global.version, natives
diff --git a/changelog.txt b/changelog.txt
index 511476b..41c8479 100755
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,9 @@
+---------------------------------------------------------------------------------------------------
+Version: 0.16.40
+Date: 2. 16. 2019
+  Bugfixes:
+    - Switched to numeric value to represent scoring functions
+
 ---------------------------------------------------------------------------------------------------
 Version: 0.16.39
 Date: 2. 15. 2019
diff --git a/info.json b/info.json
index e5e3b78..d497864 100755
--- a/info.json
+++ b/info.json
@@ -1,7 +1,7 @@
 {
     "name" : "Rampant",
     "factorio_version" : "0.16",
-    "version" : "0.16.39",
+    "version" : "0.16.40",
     "title" : "Rampant",
     "author" : "Veden",
     "homepage" : "https://forums.factorio.com/viewtopic.php?f=94&t=31445",
diff --git a/libs/AIAttackWave.lua b/libs/AIAttackWave.lua
index 6696f6e..a6d69be 100755
--- a/libs/AIAttackWave.lua
+++ b/libs/AIAttackWave.lua
@@ -194,9 +194,8 @@ function aiAttackWave.formSettlers(map, surface, natives, chunk, cost, tick)
 								      CHUNK_SIZE,
 								      4)
 	    if squadPosition then
-		local squad = createSquad(squadPosition, surface, natives)
+		local squad = createSquad(squadPosition, surface, natives, nil, true)
 
-		squad.settlers = true
 		squad.maxDistance = gaussianRandomRange(natives.expansionMaxDistance,
 							natives.expansionMaxDistanceDerivation,
 							CHUNK_SIZE * 1,
diff --git a/libs/Constants.lua b/libs/Constants.lua
index ff6db28..9db2569 100755
--- a/libs/Constants.lua
+++ b/libs/Constants.lua
@@ -26,7 +26,7 @@ constants.VERSION_51 = 51
 constants.VERSION_57 = 57
 constants.VERSION_72 = 72
 constants.VERSION_73 = 73
-constants.VERSION_74 = 74
+constants.VERSION_75 = 75
 
 -- misc
 
@@ -400,6 +400,9 @@ constants.SQUAD_BUILDING = 6
 
 -- Squad Related
 
+constants.ATTACK_SCORE = 1
+constants.ATTACK_SCORE_KAMIKAZE = 2
+
 constants.RETREAT_GRAB_RADIUS = 24
 constants.RETREAT_SPAWNER_GRAB_RADIUS = 75
 
diff --git a/libs/SquadAttack.lua b/libs/SquadAttack.lua
index cfc72f0..6e4359c 100755
--- a/libs/SquadAttack.lua
+++ b/libs/SquadAttack.lua
@@ -20,6 +20,9 @@ local MOVEMENT_PHEROMONE = constants.MOVEMENT_PHEROMONE
 local BASE_PHEROMONE = constants.BASE_PHEROMONE
 local RESOURCE_PHEROMONE = constants.RESOURCE_PHEROMONE
 
+local ATTACK_SCORE = constants.ATTACK_SCORE
+local ATTACK_SCORE_KAMIKAZE = constants.ATTACK_SCORE_KAMIKAZE
+
 local SQUAD_BUILDING = constants.SQUAD_BUILDING
 
 local SQUAD_RAIDING = constants.SQUAD_RAIDING
@@ -163,11 +166,15 @@ local function attackMove(map, attackPosition, attackCmd, squad, group, natives,
 	local groupPosition = group.position
 	local x, y = positionToChunkXY(groupPosition)
 	local chunk = getChunkByXY(map, x, y)
+        local attackScorer = scoreAttackLocation
+        if (squad.attackScoreFunction == ATTACK_SCORE_KAMIKAZE) then
+            attackScorer = scoreAttackKamikazeLocation
+        end
 	local attackChunk, attackDirection = scoreNeighborsForAttack(map,
                                                                      natives,
 								     chunk,
 								     getNeighborChunks(map, x, y),
-								     squad.attackScoreFunction or scoreAttackLocation,
+								     attackScorer,
 								     squad)
 	if (chunk ~= SENTINEL_IMPASSABLE_CHUNK) then
 	    addSquadToChunk(map, chunk, squad)
@@ -258,9 +265,7 @@ function squadAttack.squadsBeginAttack(natives, players)
                 end
 
                 if squad.kamikaze and (mRandom() < (kamikazeThreshold * 0.75)) then
-                    squad.attackScoreFunction = scoreAttackKamikazeLocation
-                else
-                    squad.attackScoreFunction = scoreAttackLocation
+                    squad.attackScoreFunction = ATTACK_SCORE_KAMIKAZE
                 end
 		squad.status = SQUAD_RAIDING
 	    end
diff --git a/libs/UnitGroupUtils.lua b/libs/UnitGroupUtils.lua
index f64d3e3..e12a346 100755
--- a/libs/UnitGroupUtils.lua
+++ b/libs/UnitGroupUtils.lua
@@ -103,25 +103,25 @@ function unitGroupUtils.findNearbySquad(map, chunk, position)
     return nil
 end
 
-function unitGroupUtils.createSquad(position, surface, natives, group)
+function unitGroupUtils.createSquad(position, surface, natives, group, settlers)
     local unitGroup = group or surface.create_unit_group({position=position})
 
     local squad = {
 	group = unitGroup,
 	status = SQUAD_GUARDING,
 	penalties = {},
-	settlers = false,
 	rabid = false,
 	frenzy = false,
+        settlers = settlers or false,
 	kamikaze = false,
 	frenzyPosition = {x = 0,
 			  y = 0},
 	cycles = 0,
 	maxDistance = 0,
+        attackScoreFunction = 1,
 	originPosition = {x = 0,
 			  y = 0},
 	chunk = nil
-
     }
     natives.squads[#natives.squads+1] = squad
     return squad