@@ -682,10 +682,11 @@
 - (void)performSelector: (SEL)selector
 	     withObject: (id)object1
 	     withObject: (id)object2
 	     afterDelay: (double)delay;
 
+#ifdef OF_THREADS
 /*!
  * @brief Performs the specified selector on the specified thread.
  *
  * @param selector The selector to perform
  * @param thread The thread on which to perform the selector
@@ -808,10 +809,11 @@
 - (void)performSelector: (SEL)selector
 	       onThread: (OFThread*)thread
 	     withObject: (id)object1
 	     withObject: (id)object2
 	     afterDelay: (double)delay;
+#endif
 
 /*!
  * @brief This method is called when @ref resolveClassMethod: or
  *	  @ref resolveInstanceMethod: returned NO. It should return a target
  *	  to which the message should be forwarded.