diff --git a/eos/effects/caldarishipewstrengthcb.py b/eos/effects/caldarishipewstrengthcb.py
index a1e808484..b362382d1 100644
--- a/eos/effects/caldarishipewstrengthcb.py
+++ b/eos/effects/caldarishipewstrengthcb.py
@@ -7,10 +7,5 @@ type = "passive"
 
 def handler(fit, ship, context):
     for sensorType in ("Gravimetric", "Ladar", "Magnetometric", "Radar"):
-        fit.modules.filteredItemBoost(lambda mod: mod.item.group.name in
-                                                  (
-                                                      "ECM",
-                                                      "Burst Jammer",
-                                                  ),
-                                      "scan{0}StrengthBonus".format(sensorType),
-                                      ship.getModifiedItemAttr("shipBonusCB"), skill="Caldari Battleship")
+        fit.modules.filteredItemBoost(lambda mod: mod.item.requiresSkill("Electronic Warfare"), "scan{0}StrengthBonus".format(sensorType),
+                                      ship.getModifiedItemAttr("shipBonusCB"), stackingPenalties=True, skill="Caldari Battleship")