Index: src/OFRunLoop.m
==================================================================
--- src/OFRunLoop.m
+++ src/OFRunLoop.m
@@ -178,10 +178,13 @@
 {
 	self = [super init];
 
 	@try {
 		_timersQueue = [[OFSortedList alloc] init];
+#ifdef OF_HAVE_THREADS
+		_timersQueueMutex = [[OFMutex alloc] init];
+#endif
 
 #if defined(OF_HAVE_SOCKETS)
 		_kernelEventObserver = [[OFKernelEventObserver alloc] init];
 		_kernelEventObserver.delegate = self;
 
@@ -199,10 +202,13 @@
 }
 
 - (void)dealloc
 {
 	[_timersQueue release];
+#ifdef OF_HAVE_THREADS
+	[_timersQueueMutex release];
+#endif
 #if defined(OF_HAVE_SOCKETS)
 	[_kernelEventObserver release];
 	[_readQueues release];
 	[_writeQueues release];
 #elif defined(OF_HAVE_THREADS)