diff --git a/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/DependencyManager.kt b/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/DependencyManager.kt
index cb612a4..71dce33 100644
--- a/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/DependencyManager.kt
+++ b/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/DependencyManager.kt
@@ -102,6 +102,35 @@ object DependencyManager {
         // Then handle plugin reload
         ecoEnchantCompatibility?.handleConfigReload()
     }
+    // Return true if should bypass (either by a dependency or error)
+    // called before immutability test
+    fun earlyTryEventPreAnvilBypass(event: PrepareAnvilEvent, player: HumanEntity): Boolean {
+        try {
+            return earlyUnsafeTryEventPreAnvilBypass(event, player)
+        } catch (e: Exception) {
+            CustomAnvil.instance.logger.log(
+                Level.SEVERE,
+                "Error while trying to handle custom anvil supported plugin: ",
+                e
+            )
+
+            // Just in case to avoid illegal items
+            event.inventory.setItem(ANVIL_OUTPUT_SLOT, null)
+
+            // Finally, warn the player, maybe a lot of time but better warn than do nothing
+            event.view.player.sendMessage(ChatColor.RED.toString() + "Error while handling the anvil.")
+            return true
+        }
+    }
+
+    private fun earlyUnsafeTryEventPreAnvilBypass(event: PrepareAnvilEvent, player: HumanEntity): Boolean {
+        var bypass = false
+
+        // Test if the inventory is a gui(version specific)
+        if (externGuiTester?.testIfGui(event.view) == true) bypass = true
+
+        return bypass
+    }
 
     // Return true if should bypass (either by a dependency or error)
     fun tryEventPreAnvilBypass(event: PrepareAnvilEvent, player: HumanEntity): Boolean {
@@ -135,10 +164,6 @@ object DependencyManager {
         // Test excellent enchantments used prepare anvil
         if (!bypass && (excellentEnchantsCompatibility?.testPrepareAnvil(event) == true)) bypass = true
 
-        // Test if the inventory is a gui(version specific)
-        if (!bypass && (externGuiTester?.testIfGui(event.view) == true)) bypass = true
-
-
         return bypass
     }
 
diff --git a/src/main/kotlin/xyz/alexcrea/cuanvil/listener/PrepareAnvilListener.kt b/src/main/kotlin/xyz/alexcrea/cuanvil/listener/PrepareAnvilListener.kt
index 138546a..9d7245a 100644
--- a/src/main/kotlin/xyz/alexcrea/cuanvil/listener/PrepareAnvilListener.kt
+++ b/src/main/kotlin/xyz/alexcrea/cuanvil/listener/PrepareAnvilListener.kt
@@ -47,6 +47,9 @@ class PrepareAnvilListener : Listener {
         // Should find player
         val player: HumanEntity = InventoryViewUtil.getInstance().getPlayer(event.view)
 
+        // Test if custom anvil is bypassed before immutability test
+        if (DependencyManager.earlyTryEventPreAnvilBypass(event, player)) return
+
         val inventory = event.inventory
         val first = inventory.getItem(ANVIL_INPUT_LEFT) ?: return
         val second = inventory.getItem(ANVIL_INPUT_RIGHT)