diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderInstallTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderInstallTask.java
index 7665edab0..f62c77c17 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderInstallTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderInstallTask.java
@@ -76,10 +76,11 @@ public final class LiteLoaderInstallTask extends TaskResult<Version> {
 
         Version tempVersion = version.setLibraries(Lang.merge(remote.getLibraries(), Collections.singleton(library)));
 
+        // --tweakClass will be added in MaintainTask
         setResult(version
                 .setMainClass("net.minecraft.launchwrapper.Launch")
                 .setLibraries(Lang.merge(tempVersion.getLibraries(), version.getLibraries()))
-                .setLogging(Collections.emptyMap())
+                .setLogging(Collections.emptyMap()) // Mods may log in malformed format, causing XML parser to crash. So we suppress using official log4j configuration
         );
 
         dependencies.add(dependencyManager.checkLibraryCompletionAsync(tempVersion));
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 ec938e779..e9c10ea6d 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
@@ -86,6 +86,7 @@ public final class OptiFineInstallTask extends TaskResult<Version> {
         if (version.getMainClass() == null || !version.getMainClass().startsWith("net.minecraft.launchwrapper."))
             libraries.add(0, new Library("net.minecraft", "launchwrapper", "1.12"));
 
+        // --tweakClass will be added in MaintainTask
         setResult(version
                 .setLibraries(Lang.merge(version.getLibraries(), libraries))
                 .setMainClass("net.minecraft.launchwrapper.Launch")