diff --git a/Editor/Utilities/TriManagedReferenceGui.cs b/Editor/Utilities/TriManagedReferenceGui.cs
index f037072..fa1ea0b 100644
--- a/Editor/Utilities/TriManagedReferenceGui.cs
+++ b/Editor/Utilities/TriManagedReferenceGui.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using TriInspectorUnityInternalBridge;
 using UnityEditor;
 using UnityEditor.IMGUI.Controls;
 using UnityEngine;
@@ -16,6 +17,7 @@ namespace TriInspector.Utilities
             {
                 var dropdown = new ReferenceTypeDropDown(property, new AdvancedDropdownState());
                 dropdown.Show(rect);
+                AdvancedDropdownProxy.SetShowHeader(dropdown, false);
                 Event.current.Use();
             }
         }
diff --git a/Unity.InternalAPIEditorBridge.012/AdvancedDropdownProxy.cs b/Unity.InternalAPIEditorBridge.012/AdvancedDropdownProxy.cs
new file mode 100644
index 0000000..7df6761
--- /dev/null
+++ b/Unity.InternalAPIEditorBridge.012/AdvancedDropdownProxy.cs
@@ -0,0 +1,12 @@
+using UnityEditor.IMGUI.Controls;
+
+namespace TriInspectorUnityInternalBridge
+{
+    internal class AdvancedDropdownProxy
+    {
+        public static void SetShowHeader(AdvancedDropdown dropdown, bool showHeader)
+        {
+            dropdown.m_WindowInstance.showHeader = showHeader;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Unity.InternalAPIEditorBridge.012/AdvancedDropdownProxy.cs.meta b/Unity.InternalAPIEditorBridge.012/AdvancedDropdownProxy.cs.meta
new file mode 100644
index 0000000..220ff4a
--- /dev/null
+++ b/Unity.InternalAPIEditorBridge.012/AdvancedDropdownProxy.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: fbe08837c89a44e29ea221ffeadb811d
+timeCreated: 1652084409
\ No newline at end of file