diff --git a/DXFeedFramework/Utils/Dictionary+Ext.swift b/DXFeedFramework/Utils/Dictionary+Ext.swift
index e45b98ce6..355ebbeb3 100644
--- a/DXFeedFramework/Utils/Dictionary+Ext.swift
+++ b/DXFeedFramework/Utils/Dictionary+Ext.swift
@@ -33,3 +33,14 @@ public extension NSMutableOrderedSet {
         return changed
     }
 }
+
+public extension NSMutableSet {
+    func removeIf(using: NSPredicate) -> Bool {
+        var changed = false
+        for (value) in filtered(using: using) {
+            remove(value)
+            changed = true
+        }
+        return changed
+    }
+}
diff --git a/Samples/QuoteTableApp/MarketDepthViewController.swift b/Samples/QuoteTableApp/MarketDepthViewController.swift
index e1a69846f..8d3d5f492 100644
--- a/Samples/QuoteTableApp/MarketDepthViewController.swift
+++ b/Samples/QuoteTableApp/MarketDepthViewController.swift
@@ -171,13 +171,9 @@ extension MarketDepthViewController: UITableViewDataSource {
             return UITableViewCell()
         }
         let order = orderBook.buyOrders[indexPath.row]
-        cell.update(price: order.price,
-                    size: order.size,
+        cell.update(order: order,
                     maxSize: maxBuy,
-                    isAsk: true,
-                    marketMaker: order.marketMaker,
-                    source: order.eventSource,
-                    scope: order.scope)
+                    isAsk: true)
         cell.selectionStyle = UITableViewCell.SelectionStyle.none
         return cell
     }
@@ -189,13 +185,9 @@ extension MarketDepthViewController: UITableViewDataSource {
             return UITableViewCell()
         }
         let order = orderBook.sellOrders[indexPath.row]
-        cell.update(price: order.price,
-                    size: order.size,
+        cell.update(order: order,
                     maxSize: maxSell,
-                    isAsk: false,
-                    marketMaker: order.marketMaker,
-                    source: order.eventSource,
-                    scope: order.scope)
+                    isAsk: false)
         cell.selectionStyle = UITableViewCell.SelectionStyle.none
         return cell
     }
diff --git a/Samples/QuoteTableApp/OrderCell.swift b/Samples/QuoteTableApp/OrderCell.swift
index db6797d65..d201ca646 100644
--- a/Samples/QuoteTableApp/OrderCell.swift
+++ b/Samples/QuoteTableApp/OrderCell.swift
@@ -45,13 +45,15 @@ class OrderCell: UITableViewCell {
         sizeContentView.superview?.backgroundColor = .tableBackground
     }
 
-    func update(price: Double,
-                size: Double,
+    func update(order: Order, 
                 maxSize: Double,
-                isAsk: Bool,
-                marketMaker: String?,
-                source: IndexedEventSource,
-                scope: Scope) {
+                isAsk: Bool) {
+        let price = order.price
+        let size = order.size
+        let marketMaker = order.marketMaker
+        let source = order.eventSource
+        let scope = order.scope
+
         priceLabel.text = formatter.string(from: NSNumber(value: price))
         sizeLabel.text = formatter.string(from: NSNumber(value: size))
         sizeContentView.backgroundColor = isAsk ? .green : .red