diff --git a/gui/builtinContextMenus/graphDmgDroneMode.py b/gui/builtinContextMenus/graphDmgDroneMode.py
index 3ec31dba1..7e17de9ed 100644
--- a/gui/builtinContextMenus/graphDmgDroneMode.py
+++ b/gui/builtinContextMenus/graphDmgDroneMode.py
@@ -6,6 +6,7 @@ import wx
 import gui.globalEvents as GE
 import gui.mainFrame
 from gui.contextMenu import ContextMenuUnconditional
+from service.const import GraphDpsDroneMode
 from service.settings import GraphSettings
 
 
@@ -22,10 +23,10 @@ class TargetResists(ContextMenuUnconditional):
         return 'Drone Mode'
 
     def handleModeSwitch(self, event):
-        optionName = self.idOptionMap[event.Id]
-        if optionName == self.settings.get('mobileDroneMode'):
+        option = self.idOptionMap[event.Id]
+        if option == self.settings.get('mobileDroneMode'):
             return
-        self.settings.set('mobileDroneMode', optionName)
+        self.settings.set('mobileDroneMode', option)
         wx.PostEvent(self.mainFrame, GE.GraphOptionChanged())
 
     def getSubMenu(self, context, rootMenu, i, pitem):
@@ -35,14 +36,17 @@ class TargetResists(ContextMenuUnconditional):
         else:
             bindmenu = m
         self.idOptionMap = {}
-        optionMap = OrderedDict([('auto', 'Auto'), ('followSelf', 'Stick to attacker'), ('followTgt', 'Stick to target')])
-        for optionName, label in optionMap.items():
+        optionMap = OrderedDict([
+            (GraphDpsDroneMode.auto, 'Auto'),
+            (GraphDpsDroneMode.followAttacker, 'Stick to attacker'),
+            (GraphDpsDroneMode.followTarget, 'Stick to target')])
+        for option, label in optionMap.items():
             menuId = ContextMenuUnconditional.nextID()
             item = wx.MenuItem(m, menuId, label, kind=wx.ITEM_CHECK)
             bindmenu.Bind(wx.EVT_MENU, self.handleModeSwitch, item)
             m.Append(item)
-            item.Check(optionName == self.settings.get('mobileDroneMode'))
-            self.idOptionMap[menuId] = optionName
+            item.Check(option == self.settings.get('mobileDroneMode'))
+            self.idOptionMap[menuId] = option
         return m
 
 
diff --git a/gui/builtinGraphs/fitDamageStats/calc.py b/gui/builtinGraphs/fitDamageStats/calc.py
index 8f579953e..159e08b73 100644
--- a/gui/builtinGraphs/fitDamageStats/calc.py
+++ b/gui/builtinGraphs/fitDamageStats/calc.py
@@ -21,6 +21,7 @@
 import math
 from functools import lru_cache
 
+from service.const import GraphDpsDroneMode
 from service.settings import GraphSettings
 
 
@@ -105,7 +106,11 @@ def getDroneMult(drone, fit, tgt, atkSpeed, atkAngle, distance, tgtSpeed, tgtAng
     # Hard to simulate drone behavior, so assume chance to hit is 1 for mobile drones
     # which catch up with target
     droneOpt = GraphSettings.getInstance().get('mobileDroneMode')
-    if droneSpeed > 1 and ((droneOpt == 'auto' and droneSpeed >= tgtSpeed) or droneOpt == 'followTgt'):
+    if (
+        droneSpeed > 1 and (
+            (droneOpt == GraphDpsDroneMode.auto and droneSpeed >= tgtSpeed) or
+            droneOpt == GraphDpsDroneMode.followTarget)
+    ):
         cth = 1
     # Otherwise put the drone into center of the ship, move it at its max speed or ship's speed
     # (whichever is lower) towards direction of attacking ship and see how well it projects
@@ -141,7 +146,7 @@ def getFighterAbilityMult(fighter, ability, fit, distance, tgtSpeed, tgtSigRadiu
             tgtSigRadius=tgtSigRadius)
     droneOpt = GraphSettings.getInstance().get('mobileDroneMode')
     # It's regular missile-based attack
-    if (droneOpt == 'auto' and fighterSpeed >= tgtSpeed) or droneOpt == 'followTgt':
+    if (droneOpt == GraphDpsDroneMode.auto and fighterSpeed >= tgtSpeed) or droneOpt == GraphDpsDroneMode.followTarget:
         rangeFactor = 1
     # Same as with drones, if fighters are slower - put them to center of
     # the ship and see how they apply
diff --git a/service/const.py b/service/const.py
index 5fa2b671f..3348e37d5 100644
--- a/service/const.py
+++ b/service/const.py
@@ -110,3 +110,10 @@ class GuiAttrGroup(IntEnum):
     PROPULSIONS = auto()
     FIGHTERS = auto()
     SHIP_GROUP = auto()
+
+
+@unique
+class GraphDpsDroneMode(IntEnum):
+    auto = 1
+    followAttacker = 2
+    followTarget = 3
diff --git a/service/settings.py b/service/settings.py
index 3c90a5ea0..edc18c858 100644
--- a/service/settings.py
+++ b/service/settings.py
@@ -23,9 +23,12 @@ import urllib.request
 import urllib.error
 import urllib.parse
 
+from logbook import Logger
+
 import config
 import eos.config
-from logbook import Logger
+from service.const import GraphDpsDroneMode
+
 
 pyfalog = Logger(__name__)
 
@@ -514,7 +517,7 @@ class GraphSettings:
 
     def __init__(self):
         defaults = {
-            'mobileDroneMode': 'auto',
+            'mobileDroneMode': GraphDpsDroneMode.auto,
             'ignoreResists': True}
         self.settings = SettingsProvider.getInstance().getSettings('graphSettings', defaults)