diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/terracotta/TerracottaState.java b/HMCL/src/main/java/org/jackhuang/hmcl/terracotta/TerracottaState.java
index 7bcddb577..d09eb7b5b 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/terracotta/TerracottaState.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/terracotta/TerracottaState.java
@@ -204,7 +204,7 @@ public abstract sealed class TerracottaState {
 
         @Override
         public boolean isForkOf(TerracottaState state) {
-            return state instanceof HostOK hostOK && this.index - hostOK.index <= profileIndex;
+            return state instanceof GuestOK guestOK && this.index - guestOK.index <= profileIndex;
         }
     }