diff --git a/Mage.Client/src/main/java/mage/client/util/sets/ConstructedFormats.java b/Mage.Client/src/main/java/mage/client/util/sets/ConstructedFormats.java
index ce100ce7c3d..300e529df3e 100644
--- a/Mage.Client/src/main/java/mage/client/util/sets/ConstructedFormats.java
+++ b/Mage.Client/src/main/java/mage/client/util/sets/ConstructedFormats.java
@@ -242,13 +242,13 @@ public class ConstructedFormats {
             return Arrays.asList("ALA", "CON", "ARB");
         }
         if (format.equals("Alara Reborn")) {
-            return Arrays.asList("ALA");
+            return Arrays.asList("ARB");
         }
         if (format.equals("Conflux")) {
             return Arrays.asList("CON");
         }
         if (format.equals("Shards of Alara")) {
-            return Arrays.asList("ARB");
+            return Arrays.asList("ALA");
         }
         if (format.equals("* Zendikar Block")) {
             return Arrays.asList("ZEN", "WWK", "ROE");