diff --git a/patches/server/0015-Rewrite-dataconverter-system.patch b/patches/server/0015-Rewrite-dataconverter-system.patch
index 464019c141..5fc3ac9a0a 100644
--- a/patches/server/0015-Rewrite-dataconverter-system.patch
+++ b/patches/server/0015-Rewrite-dataconverter-system.patch
@@ -18618,7 +18618,7 @@ index 0000000000000000000000000000000000000000..bec25939a78141d989414a5d4f33ce13
 +}
 diff --git a/src/main/java/ca/spottedleaf/dataconverter/minecraft/versions/V3459.java b/src/main/java/ca/spottedleaf/dataconverter/minecraft/versions/V3459.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..21cd3a4252ba57f088105b6fdf2ebb659c00afd3
+index 0000000000000000000000000000000000000000..86509b2fa3c83dc485776d36b7bc2944b1f9a0b5
 --- /dev/null
 +++ b/src/main/java/ca/spottedleaf/dataconverter/minecraft/versions/V3459.java
 @@ -0,0 +1,34 @@
@@ -18648,7 +18648,7 @@ index 0000000000000000000000000000000000000000..21cd3a4252ba57f088105b6fdf2ebb65
 +
 +                final MapType<String> endData = dimensionData.getMap("1");
 +                if (endData != null) {
-+                    data.setMap("DragonFight", endData.getMap("DragonFight", endData.getTypeUtil().createEmptyMap()));
++                    data.setMap("DragonFight", endData.getMap("DragonFight", endData.getTypeUtil().createEmptyMap()).copy());
 +                }
 +
 +                return null;