@@ -54,10 +54,12 @@
 /*!
  * The errno of the error that occurred.
  */
 @property (readonly) int errNo;
 
++ (instancetype)exception OF_UNAVAILABLE;
+
 /*!
  * @brief Creates a new, autoreleased connection failed exception.
  *
  * @param host The host to which the connection failed
  * @param port The port on the host to which the connection failed
@@ -79,10 +81,12 @@
  */
 + (instancetype)exceptionWithHost: (OFString *)host
 			     port: (uint16_t)port
 			   socket: (id)socket
 			    errNo: (int)errNo;
+
+- init OF_UNAVAILABLE;
 
 /*!
  * @brief Initializes an already allocated connection failed exception.
  *
  * @param host The host to which the connection failed