diff --git a/Tablet/TableDynamicRowBuilder.swift b/Tablet/TableDynamicRowBuilder.swift
index 63b9daa..4f1e238 100644
--- a/Tablet/TableDynamicRowBuilder.swift
+++ b/Tablet/TableDynamicRowBuilder.swift
@@ -28,7 +28,7 @@ public protocol RowItemable {
     func configure(cell: UITableViewCell)
 }
 
-public class RowItem<DataType, CellType: ConfigurableCell where CellType.T == DataType>: RowItemable {
+public class RowItem<DataType, CellType: ConfigurableCell where CellType.T == DataType, CellType: UITableViewCell>: RowItemable {
     
     public let item: DataType
 
diff --git a/TabletDemo/Classes/Presentation/Controllers/MainController.swift b/TabletDemo/Classes/Presentation/Controllers/MainController.swift
index 0a4da70..6b23bfa 100644
--- a/TabletDemo/Classes/Presentation/Controllers/MainController.swift
+++ b/TabletDemo/Classes/Presentation/Controllers/MainController.swift
@@ -39,6 +39,7 @@ class MainController: UIViewController {
         let cellItem3 = RowItem<String, StoryboardImageTableViewCell>(item: "3")
        
         
+       
         
         
         let b = TableDynamicRowBuilder(items: [cellItem, cellItem2, cellItem3])