@@ -50,10 +50,12 @@
 /*!
  * The errno of the error that occurred.
  */
 @property (readonly) int errNo;
 
++ (instancetype)exception OF_UNAVAILABLE;
+
 /*!
  * @brief Creates a new, autoreleased seek failed exception.
  *
  * @param stream The stream for which seeking failed
  * @param offset The offset to which seeking failed
@@ -63,10 +65,12 @@
  */
 + (instancetype)exceptionWithStream: (OFSeekableStream *)stream
 			     offset: (of_offset_t)offset
 			     whence: (int)whence
 			      errNo: (int)errNo;
+
+- init OF_UNAVAILABLE;
 
 /*!
  * @brief Initializes an already allocated seek failed exception.
  *
  * @param stream The stream for which seeking failed