diff --git a/ReactiveObjC/RACSubject.m b/ReactiveObjC/RACSubject.m
index 8ea052fd2..3c071ef3a 100644
--- a/ReactiveObjC/RACSubject.m
+++ b/ReactiveObjC/RACSubject.m
@@ -62,7 +62,9 @@ - (RACDisposable *)subscribe:(id<RACSubscriber>)subscriber {
 		[subscribers addObject:subscriber];
 	}
 	
+    @weakify(subscriber, subscribers);
 	[disposable addDisposable:[RACDisposable disposableWithBlock:^{
+		@strongify(subscriber, subscribers);
 		@synchronized (subscribers) {
 			// Since newer subscribers are generally shorter-lived, search
 			// starting from the end of the list.