diff --git a/fabric/src/main/java/icyllis/modernui/mc/Config.java b/fabric/src/main/java/icyllis/modernui/mc/Config.java
index adf97c26..9c5c7ca6 100644
--- a/fabric/src/main/java/icyllis/modernui/mc/Config.java
+++ b/fabric/src/main/java/icyllis/modernui/mc/Config.java
@@ -292,7 +292,7 @@ private Client(@Nonnull ForgeConfigSpec.Builder builder) {
 
             mTooltip = builder.comment(
                             "Whether to enable Modern UI enhanced tooltip, or back to vanilla default.")
-                    .define("enable", true);
+                    .define("enable", !ModernUIMod.isSodiumLoaded() && !ModernUIMod.isLegendaryTooltipsLoaded());
             mRoundedTooltip = builder.comment(
                             "Whether to use rounded tooltip shapes, or to use rectangular shapes.")
                     .define("roundedShape", true);
diff --git a/fabric/src/main/java/icyllis/modernui/mc/ModernUIMod.java b/fabric/src/main/java/icyllis/modernui/mc/ModernUIMod.java
index 482b55ce..eaf9878d 100644
--- a/fabric/src/main/java/icyllis/modernui/mc/ModernUIMod.java
+++ b/fabric/src/main/java/icyllis/modernui/mc/ModernUIMod.java
@@ -53,8 +53,10 @@ public abstract class ModernUIMod {
     public static volatile boolean sDevelopment;
     public static volatile boolean sDeveloperMode;
 
-    public static boolean sOptiFineLoaded;
-    public static boolean sIrisApiLoaded;
+    protected static boolean sOptiFineLoaded;
+    protected static boolean sIrisApiLoaded;
+    protected static volatile boolean sLegendaryTooltipsLoaded;
+    protected static volatile boolean sSodiumLoaded;
 
     static {
         try {
@@ -89,6 +91,14 @@ public static boolean isIrisApiLoaded() {
         return sIrisApiLoaded;
     }
 
+    public static boolean isLegendaryTooltipsLoaded() {
+        return sLegendaryTooltipsLoaded;
+    }
+
+    public static boolean isSodiumLoaded() {
+        return sSodiumLoaded;
+    }
+
     public static boolean isDeveloperMode() {
         return sDeveloperMode || sDevelopment;
     }
diff --git a/fabric/src/main/java/icyllis/modernui/mc/fabric/ModernUIFabric.java b/fabric/src/main/java/icyllis/modernui/mc/fabric/ModernUIFabric.java
index bfcb83c2..25ed5925 100644
--- a/fabric/src/main/java/icyllis/modernui/mc/fabric/ModernUIFabric.java
+++ b/fabric/src/main/java/icyllis/modernui/mc/fabric/ModernUIFabric.java
@@ -41,6 +41,9 @@ public void onInitialize() {
             LOGGER.warn(MARKER, "Signature is missing");
         }
 
+        sLegendaryTooltipsLoaded = FabricLoader.getInstance().isModLoaded("legendarytooltips");
+        sSodiumLoaded = FabricLoader.getInstance().isModLoaded("sodium");
+
         ModConfigEvents.loading(ID).register(Config::reloadCommon);
         ModConfigEvents.reloading(ID).register(Config::reloadCommon);
         Config.initCommonConfig(
diff --git a/forge/src/main/java/icyllis/modernui/mc/Config.java b/forge/src/main/java/icyllis/modernui/mc/Config.java
index acd61f76..32cac25e 100644
--- a/forge/src/main/java/icyllis/modernui/mc/Config.java
+++ b/forge/src/main/java/icyllis/modernui/mc/Config.java
@@ -293,7 +293,7 @@ private Client(@Nonnull ForgeConfigSpec.Builder builder) {
 
             mTooltip = builder.comment(
                             "Whether to enable Modern UI enhanced tooltip, or back to vanilla default.")
-                    .define("enable", true);
+                    .define("enable", !ModernUIMod.isLegendaryTooltipsLoaded());
             mRoundedTooltip = builder.comment(
                             "Whether to use rounded tooltip shapes, or to use rectangular shapes.")
                     .define("roundedShape", true);
diff --git a/forge/src/main/java/icyllis/modernui/mc/ModernUIMod.java b/forge/src/main/java/icyllis/modernui/mc/ModernUIMod.java
index 0bad280a..2c980968 100644
--- a/forge/src/main/java/icyllis/modernui/mc/ModernUIMod.java
+++ b/forge/src/main/java/icyllis/modernui/mc/ModernUIMod.java
@@ -40,8 +40,9 @@ public abstract class ModernUIMod {
     public static volatile boolean sDevelopment;
     public static volatile boolean sDeveloperMode;
 
-    public static boolean sOptiFineLoaded;
-    public static boolean sIrisApiLoaded;
+    protected static boolean sOptiFineLoaded;
+    protected static boolean sIrisApiLoaded;
+    protected static volatile boolean sLegendaryTooltipsLoaded;
 
     static {
         try {
@@ -76,6 +77,10 @@ public static boolean isIrisApiLoaded() {
         return sIrisApiLoaded;
     }
 
+    public static boolean isLegendaryTooltipsLoaded() {
+        return sLegendaryTooltipsLoaded;
+    }
+
     public static boolean isDeveloperMode() {
         return sDeveloperMode || sDevelopment;
     }
diff --git a/forge/src/main/java/icyllis/modernui/mc/forge/ModernUIForge.java b/forge/src/main/java/icyllis/modernui/mc/forge/ModernUIForge.java
index 760f5a61..bbbb28d9 100644
--- a/forge/src/main/java/icyllis/modernui/mc/forge/ModernUIForge.java
+++ b/forge/src/main/java/icyllis/modernui/mc/forge/ModernUIForge.java
@@ -81,6 +81,7 @@ public ModernUIForge() {
             warnSetup("You should remove ReBlurred, Modern UI already includes its features, " +
                     "and Modern UI has better performance than it");
         }
+        sLegendaryTooltipsLoaded = ModList.get().isLoaded("legendarytooltips");
 
         Config.initCommonConfig(
                 spec -> ModLoadingContext.get().registerConfig(ModConfig.Type.COMMON, spec,