diff --git a/src/main/java/com/songoda/core/gui/GuiHolder.java b/src/main/java/com/songoda/core/gui/GuiHolder.java
index 641f38c8..34737b96 100644
--- a/src/main/java/com/songoda/core/gui/GuiHolder.java
+++ b/src/main/java/com/songoda/core/gui/GuiHolder.java
@@ -1,6 +1,5 @@
 package com.songoda.core.gui;
 
-import com.sun.istack.internal.NotNull;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.InventoryHolder;
 
@@ -15,7 +14,7 @@ class GuiHolder implements InventoryHolder {
     final Gui gui;
     final GuiManager manager;
 
-    public GuiHolder(@NotNull GuiManager manager, @NotNull Gui gui) {
+    public GuiHolder(GuiManager manager, Gui gui) {
         this.gui = gui;
         this.manager = manager;
     }