diff --git a/Assets/Scripts/Behaviours/UIManager.cs b/Assets/Scripts/Behaviours/UIManager.cs
index badae0da..cda10818 100644
--- a/Assets/Scripts/Behaviours/UIManager.cs
+++ b/Assets/Scripts/Behaviours/UIManager.cs
@@ -38,6 +38,8 @@ namespace SanAndreasUnity.Behaviours
 		[SerializeField] float m_scrollbarSizeMultiplierOnMobile = 2f;
 		[SerializeField] bool m_changeScrollbarSizeInEditor = false;
 
+		public static event System.Action onGUI = delegate {};
+
 		// note: UIManager's OnGUI() should execute before other OnGUI()s, because other scripts may try to create their own
 		// style from existing styles
 
@@ -80,6 +82,8 @@ namespace SanAndreasUnity.Behaviours
 	    		SetStylesFontSize(m_imguiFontSize);
 	    	}
 
+			onGUI();
+
 	    }
 
 	    void SetupGui()