diff --git a/eos/effects/fighterabilitystasiswebifier.py b/eos/effects/fighterabilitystasiswebifier.py
index 0aa3b5faf..1fd6dd96f 100644
--- a/eos/effects/fighterabilitystasiswebifier.py
+++ b/eos/effects/fighterabilitystasiswebifier.py
@@ -14,4 +14,5 @@ grouped = True
 def handler(fit, src, context):
     if "projected" not in context:
         return
-    fit.ship.boostItemAttr("maxVelocity", src.getModifiedItemAttr("{}SpeedPenalty".format(prefix)) * src.amountActive)
+    fit.ship.boostItemAttr("maxVelocity", src.getModifiedItemAttr("{}SpeedPenalty".format(prefix)) * src.amountActive,
+                           stackingPenalties=True)