@@ -49,11 +49,11 @@
  * \warning If for some reason the number of cores in the system could not be
  *	    determined, the pool will only have one thread!
  *
  * \return A new thread pool with one thread for each core in the system
  */
-+ threadPool;
++ (instancetype)threadPool;
 
 /**
  * \brief Returns a new thread pool with the specified number of threads.
  *
  * \warning If for some reason the number of cores in the system could not be
@@ -60,11 +60,11 @@
  *	    determined, the pool will only have one thread!
  *
  * \param size The number of threads for the pool
  * \return A new thread pool with the specified number of threads
  */
-+ threadPoolWithSize: (size_t)size;
++ (instancetype)threadPoolWithSize: (size_t)size;
 
 /**
  * \brief Initializes an already allocated OFThreadPool with one thread for
  *	  each core in the system.
  *