@@ -18,21 +18,25 @@
 #import "OFStream.h"
 #import "OFStreamObserver.h"
 #import "OFTCPSocket.h"
 
 @class OFSortedList;
+#ifdef OF_THREADS
 @class OFMutex;
+#endif
 @class OFTimer;
 @class OFMutableDictionary;
 
 /*!
  * @brief A class providing a run loop for the application and its processes.
  */
 @interface OFRunLoop: OFObject
 {
 	OFSortedList *timersQueue;
+#ifdef OF_THREADS
 	OFMutex *timersQueueLock;
+#endif
 	OFStreamObserver *streamObserver;
 	OFMutableDictionary *readQueues;
 }
 
 /*!
@@ -47,11 +51,11 @@
  *
  * @return The run loop for the current thread
  */
 + (OFRunLoop*)currentRunLoop;
 
-+ (void)OF_setMainRunLoop;
++ (void)OF_setMainRunLoop: (OFRunLoop*)runLoop;
 + (void)OF_addAsyncReadForStream: (OFStream*)stream
 			  buffer: (void*)buffer
 			  length: (size_t)length
 			  target: (id)target
 			selector: (SEL)selector;