diff --git a/submodules/SSignalKit/SwiftSignalKit/Source/Signal.swift b/submodules/SSignalKit/SwiftSignalKit/Source/Signal.swift
index 2078378f73..6efb960bd6 100644
--- a/submodules/SSignalKit/SwiftSignalKit/Source/Signal.swift
+++ b/submodules/SSignalKit/SwiftSignalKit/Source/Signal.swift
@@ -24,7 +24,7 @@ public func |> <T, U>(value: T, function: ((T) -> U)) -> U {
 }
 
 private final class SubscriberDisposable<T, E>: Disposable, CustomStringConvertible {
-    private let subscriber: Subscriber<T, E>
+    private weak var subscriber: Subscriber<T, E>?
     
     private var lock = pthread_mutex_t()
     private var disposable: Disposable?
@@ -41,15 +41,18 @@ private final class SubscriberDisposable<T, E>: Disposable, CustomStringConverti
     }
     
     func dispose() {
-        self.subscriber.markTerminatedWithoutDisposal()
+        var subscriber: Subscriber<T, E>?
         
         var disposeItem: Disposable?
         pthread_mutex_lock(&self.lock)
         disposeItem = self.disposable
+        subscriber = self.subscriber
+        self.subscriber = nil
         self.disposable = nil
         pthread_mutex_unlock(&self.lock)
         
         disposeItem?.dispose()
+        subscriber?.markTerminatedWithoutDisposal()
     }
     
     public var description: String {