diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72af0528..2a3dd0ac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 # Upcoming
 
 ### ✅ Added
-- Configuration for highlighted composer border color
+- Config for highlighted composer border color
+- Config for enforcing unique reactions
 
 ### 🐞 Fixed
 - Improved loading of gallery images
diff --git a/Sources/StreamChatSwiftUI/ChatChannel/MessageList/MessageListConfig.swift b/Sources/StreamChatSwiftUI/ChatChannel/MessageList/MessageListConfig.swift
index 9cefffe1..15491767 100644
--- a/Sources/StreamChatSwiftUI/ChatChannel/MessageList/MessageListConfig.swift
+++ b/Sources/StreamChatSwiftUI/ChatChannel/MessageList/MessageListConfig.swift
@@ -26,7 +26,8 @@ public struct MessageListConfig {
         scrollingAnchor: UnitPoint = .bottom,
         showNewMessagesSeparator: Bool = true,
         handleTabBarVisibility: Bool = true,
-        messageListAlignment: MessageListAlignment = .standard
+        messageListAlignment: MessageListAlignment = .standard,
+        uniqueReactionsEnabled: Bool = false
     ) {
         self.messageListType = messageListType
         self.typingIndicatorPlacement = typingIndicatorPlacement
@@ -46,6 +47,7 @@ public struct MessageListConfig {
         self.showNewMessagesSeparator = showNewMessagesSeparator
         self.handleTabBarVisibility = handleTabBarVisibility
         self.messageListAlignment = messageListAlignment
+        self.uniqueReactionsEnabled = uniqueReactionsEnabled
     }
 
     public let messageListType: MessageListType
@@ -66,6 +68,7 @@ public struct MessageListConfig {
     public let showNewMessagesSeparator: Bool
     public let handleTabBarVisibility: Bool
     public let messageListAlignment: MessageListAlignment
+    public let uniqueReactionsEnabled: Bool
 }
 
 /// Contains information about the message paddings.
diff --git a/Sources/StreamChatSwiftUI/ChatChannel/Reactions/ReactionsOverlayViewModel.swift b/Sources/StreamChatSwiftUI/ChatChannel/Reactions/ReactionsOverlayViewModel.swift
index b8d6815d..9c7dd48a 100644
--- a/Sources/StreamChatSwiftUI/ChatChannel/Reactions/ReactionsOverlayViewModel.swift
+++ b/Sources/StreamChatSwiftUI/ChatChannel/Reactions/ReactionsOverlayViewModel.swift
@@ -33,7 +33,10 @@ open class ReactionsOverlayViewModel: ObservableObject, ChatMessageControllerDel
             messageController?.deleteReaction(reaction)
         } else {
             // reaction should be added
-            messageController?.addReaction(reaction)
+            messageController?.addReaction(
+                reaction,
+                enforceUnique: utils.messageListConfig.uniqueReactionsEnabled
+            )
         }
     }