diff --git a/forge-core/src/main/java/forge/deck/CardPool.java b/forge-core/src/main/java/forge/deck/CardPool.java
index 8cb40f4a8cb..ddda471c676 100644
--- a/forge-core/src/main/java/forge/deck/CardPool.java
+++ b/forge-core/src/main/java/forge/deck/CardPool.java
@@ -435,7 +435,7 @@ public class CardPool extends ItemPool<PaperCard> {
 
     public String toCardList(String separator) {
         List<Entry<PaperCard, Integer>> main2sort = Lists.newArrayList(this);
-        main2sort.sort(ItemPoolSorter.BY_NAME_THEN_SET);
+        Collections.sort(main2sort, ItemPoolSorter.BY_NAME_THEN_SET);
         final CardDb commonDb = StaticData.instance().getCommonCards();
         StringBuilder sb = new StringBuilder();