diff --git a/service/port/efs.py b/service/port/efs.py
index fc00d5dfb..71ea9660f 100755
--- a/service/port/efs.py
+++ b/service/port/efs.py
@@ -523,18 +523,18 @@ class EfsPort:
         tf.mode = fit.mode
         preTraitMultipliers = getCurrentMultipliers(tf)
         for effect in fit.ship.item.effects.values():
-            if effect._Effect__effectModule is not None:
+            if effect.isImplemented:
                 effect.handler(tf, tf.ship, [])
         # Factor in mode effects for T3 Destroyers
         if fit.mode is not None:
             for effect in fit.mode.item.effects.values():
-                if effect._Effect__effectModule is not None:
+                if effect.isImplemented:
                     effect.handler(tf, fit.mode, [])
         if fit.ship.item.groupID == getGroup("Strategic Cruiser").ID:
             subSystems = list(filter(lambda mod: mod.slot == FittingSlot.SUBSYSTEM and mod.item, fit.modules))
             for sub in subSystems:
                 for effect in sub.item.effects.values():
-                    if effect._Effect__effectModule is not None:
+                    if effect.isImplemented:
                         effect.handler(tf, sub, [])
         postTraitMultipliers = getCurrentMultipliers(tf)
         getMaxRatio = lambda dictA, dictB, key: max(map(lambda a, b: b / a, dictA[key], dictB[key]))