diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineInstallTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineInstallTask.java
index cf8e712c1..38c8eef0b 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineInstallTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineInstallTask.java
@@ -229,6 +229,7 @@ public final class OptiFineInstallTask extends Task<Version> {
         try (FileSystem fs = CompressingUtils.createReadOnlyZipFileSystem(installer)) {
             Path configClass = fs.getPath("Config.class");
             if (!Files.exists(configClass)) configClass = fs.getPath("net/optifine/Config.class");
+            if (!Files.exists(configClass)) configClass = fs.getPath("notch/net/optifine/Config.class");
             if (!Files.exists(configClass)) throw new IOException("Unrecognized installer");
             ConstantPool pool = ConstantPoolScanner.parse(Files.readAllBytes(configClass), ConstantType.UTF8);
             List<String> constants = new ArrayList<>();