diff --git a/MVMCoreUI/Atomic/Molecules/NavigationBar/NavigationItemModel.swift b/MVMCoreUI/Atomic/Molecules/NavigationBar/NavigationItemModel.swift
index 283da64d..d8c8c7ac 100644
--- a/MVMCoreUI/Atomic/Molecules/NavigationBar/NavigationItemModel.swift
+++ b/MVMCoreUI/Atomic/Molecules/NavigationBar/NavigationItemModel.swift
@@ -19,8 +19,11 @@ public class NavigationItemModel: NavigationItemModelProtocol, MoleculeModelProt
     public var tintColor: Color
     public var line: LineModel?
     public var hidesSystemBackButton = true
+    
+    /// If true, we add the button in the backButton property. If false we do not add the button. If nil, we add the button if the controller is not the bottom of the stack
     public var alwaysShowBackButton: Bool?
     public var backButton: (NavigationButtonModelProtocol & MoleculeModelProtocol)?
+    
     public var additionalLeftButtons: [(NavigationButtonModelProtocol & MoleculeModelProtocol)]?
     public var additionalRightButtons: [(NavigationButtonModelProtocol & MoleculeModelProtocol)]?
     public var titleView: MoleculeModelProtocol?