diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameRepository.java b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameRepository.java
index 9177da0d3..563aba480 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameRepository.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameRepository.java
@@ -161,6 +161,8 @@ public class HMCLGameRepository extends DefaultGameRepository {
             return new Image("file:" + iconFile.getAbsolutePath());
         else if ("net.minecraft.launchwrapper.Launch".equals(version.getMainClass()))
             return new Image("/assets/img/furnace.png");
+        else if ("cpw.mods.modlauncher.Launcher".equals(version.getMainClass()))
+            return new Image("/assets/img/furnace.png");
         else
             return new Image("/assets/img/grass.png");
     }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MaintainTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MaintainTask.java
index 156938ff3..919998665 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MaintainTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MaintainTask.java
@@ -44,7 +44,7 @@ public class MaintainTask extends TaskResult<Version> {
             return maintainGameWithLaunchWrapper(version);
         } else {
             // Vanilla Minecraft does not need maintain
-            // Forge 1.13.2 support not implemented.
+            // Forge 1.13 support not implemented, not compatible with OptiFine currently.
             return version;
         }
     }