diff --git a/src/main/java/forge/card/cardfactory/CardFactoryUtil.java b/src/main/java/forge/card/cardfactory/CardFactoryUtil.java
index 85e48ca764c..dbb3a47c19b 100644
--- a/src/main/java/forge/card/cardfactory/CardFactoryUtil.java
+++ b/src/main/java/forge/card/cardfactory/CardFactoryUtil.java
@@ -788,7 +788,7 @@ public class CardFactoryUtil {
      */
     public static List<Card> getActivateablesFromZone(final PlayerZone zone, final Player activator) {
 
-        Iterable<Card> cl = zone.getCards();
+        Iterable<Card> cl = Lists.newArrayList(zone.getCards());
 
         // Only check the top card of the library
         if (zone.is(ZoneType.Library)) {