diff --git a/src/engine/wpakpowers/Behaviours.java b/src/engine/wpakpowers/Behaviours.java
index 48aaf316..d8b4f68d 100644
--- a/src/engine/wpakpowers/Behaviours.java
+++ b/src/engine/wpakpowers/Behaviours.java
@@ -86,7 +86,7 @@ public class Behaviours {
         // all which match the intended modType
 
         for (AppliedEffect appliedEffect : target._effects.values())
-            if (appliedEffect.modifiers.keySet().contains(noMod))
+            if (appliedEffect.modifiers.containsKey(noMod))
                 removeList.add(appliedEffect.effect);
 
         for (Effect effectEntry : removeList)