diff --git a/Sources/PubNub/Subscription/SubscriptionSession.swift b/Sources/PubNub/Subscription/SubscriptionSession.swift
index dba7d714..35b9fff0 100644
--- a/Sources/PubNub/Subscription/SubscriptionSession.swift
+++ b/Sources/PubNub/Subscription/SubscriptionSession.swift
@@ -125,7 +125,7 @@ class SubscriptionSession: EventEmitter, StatusEmitter {
       and: channelGroupSubscriptions,
       at: cursor?.timetoken
     )
-    
+
     let channelSubsToMerge = channelSubscriptions.reduce(
       into: [String: Subscription]()
     ) { accumulatedValue, subscription in
@@ -133,7 +133,7 @@ class SubscriptionSession: EventEmitter, StatusEmitter {
         accumulatedValue[$0] = subscription
       }
     }
-    
+
     let channelGroupSubsToMerge = channelGroupSubscriptions.reduce(
       into: [String: Subscription]()
     ) { accumulatedValue, subscription in
@@ -141,12 +141,12 @@ class SubscriptionSession: EventEmitter, StatusEmitter {
         accumulatedValue[$0] = subscription
       }
     }
-    
+
     globalChannelSubscriptions.lockedWrite {
-      $0.merge(channelSubsToMerge) { (_, new) in new }
+      $0.merge(channelSubsToMerge) { _, new in new }
     }
     globalGroupSubscriptions.lockedWrite {
-      $0.merge(channelGroupSubsToMerge) { (_, new) in new }
+      $0.merge(channelGroupSubsToMerge) { _, new in new }
     }
   }
 
@@ -180,13 +180,13 @@ class SubscriptionSession: EventEmitter, StatusEmitter {
       and: globalGroupSubscriptions.lockedRead { $0 }.compactMap { groupNamesToUnsubscribe.contains($0.key) ? $0.value : nil },
       presenceOnly: presenceOnly
     )
-    
+
     globalChannelSubscriptions.lockedWrite { currentContainer in
       channelNamesToUnsubscribe.forEach {
         currentContainer.removeValue(forKey: $0)
       }
     }
-    
+
     globalGroupSubscriptions.lockedWrite { currentContainer in
       groupNamesToUnsubscribe.forEach {
         currentContainer.removeValue(forKey: $0)