diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java
index b483dbe138..a497c2a151 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java
@@ -279,6 +279,7 @@ private Command generateCommandLine(Path nativeFolder) throws IOException {
 
         if (instance.hasComponent(GameComponentType.CLEANROOM)) {
             libraryClasspath.removeIf(c -> c.contains("2.9.4-nightly-20150209"));
+            libraryClasspath.removeIf(c -> c.contains("platform-3.4.0"));
         }
 
         Path jar = instance.getInstanceJarFile();