diff --git a/src/main/java/fr/xephi/authme/AuthMe.java b/src/main/java/fr/xephi/authme/AuthMe.java
index f57ae0b7..b2e2267e 100644
--- a/src/main/java/fr/xephi/authme/AuthMe.java
+++ b/src/main/java/fr/xephi/authme/AuthMe.java
@@ -360,8 +360,10 @@ public class AuthMe extends JavaPlugin {
         if (settings.getProperty(SecuritySettings.ANTI_GHOST_PLAYERS)) {
             pluginManager.registerEvents(injector.getSingleton(DoubleLoginFixListener.class), this);
         }
-        if (settings.getProperty(SecuritySettings.ADVANCED_SHULKER_FIX)) {
+        if (settings.getProperty(SecuritySettings.ADVANCED_SHULKER_FIX) && !isClassLoaded("org.bukkit.event.player.PlayerCommandSendEvent")) {
             pluginManager.registerEvents(injector.getSingleton(AdvancedShulkerFixListener.class), this);
+        } else if (settings.getProperty(SecuritySettings.ADVANCED_SHULKER_FIX) && isClassLoaded("org.bukkit.event.player.PlayerCommandSendEvent")) {
+            logger.warning("You are running an 1.13+ minecraft server, advancedShulkerFix won't enable.");
         }
     }
 
diff --git a/src/main/java/fr/xephi/authme/settings/properties/SecuritySettings.java b/src/main/java/fr/xephi/authme/settings/properties/SecuritySettings.java
index 937712fa..682c50a8 100644
--- a/src/main/java/fr/xephi/authme/settings/properties/SecuritySettings.java
+++ b/src/main/java/fr/xephi/authme/settings/properties/SecuritySettings.java
@@ -38,7 +38,7 @@ public final class SecuritySettings implements SettingsHolder {
     @Comment({"(MC1.13- only)",
         "Should we fix the shulker crash bug with advanced method?"})
     public static final Property<Boolean> ADVANCED_SHULKER_FIX =
-        newProperty("3rdPartyFeature.fixes.advancedShulkerFix", false);
+        newProperty("3rdPartyFeature.fixes.advancedShulkerFix", true);
 
     @Comment({"Choose the best teleport method by server brand?",
         "(Enable this if you are using Paper)"})