diff --git a/sample-swift/SendBird-iOS/Chatting/ChattingView.swift b/sample-swift/SendBird-iOS/Chatting/ChattingView.swift
index b0cbcb0..64a3bd8 100644
--- a/sample-swift/SendBird-iOS/Chatting/ChattingView.swift
+++ b/sample-swift/SendBird-iOS/Chatting/ChattingView.swift
@@ -37,7 +37,7 @@ class ChattingView: ReusableViewFromXib, UITableViewDelegate, UITableViewDataSou
     var stopMeasuringVelocity: Bool = true
     var initialLoading: Bool = true
     
-    var delegate: (ChattingViewDelegate & MessageDelegate)?
+    weak var delegate: (ChattingViewDelegate & MessageDelegate)?
 
     @IBOutlet weak var typingIndicatorContainerViewHeight: NSLayoutConstraint!
     @IBOutlet weak var typingIndicatorImageView: UIImageView!