diff --git a/forge-game/src/main/java/forge/game/GameFormat.java b/forge-game/src/main/java/forge/game/GameFormat.java
index 7b0511c9e72..01da8417c0a 100644
--- a/forge-game/src/main/java/forge/game/GameFormat.java
+++ b/forge-game/src/main/java/forge/game/GameFormat.java
@@ -367,6 +367,7 @@ public class GameFormat implements Comparable<GameFormat> {
             coreFormats.add("Oathbreaker.txt");
             coreFormats.add("Premodern.txt");
             coreFormats.add("Pauper.txt");
+            coreFormats.add("PreDH.txt");
         }
         
         public Reader(File forgeFormats, File customFormats, boolean includeArchived) {