@@ -13,10 +13,14 @@
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
 #import "OFException.h"
+
+#ifndef OF_HAVE_THREADS
+# error No threads available!
+#endif
 
 @class OFThread;
 
 /*!
  * @brief An exception indicating that starting a thread failed.