@@ -18,10 +18,12 @@
 
 #ifndef OF_HAVE_SOCKETS
 # error No sockets available!
 #endif
 
+OF_ASSUME_NONNULL_BEGIN
+
 /*!
  * @class OFConnectionFailedException \
  *	  OFConnectionFailedException.h ObjFW/OFConnectionFailedException.h
  *
  * @brief An exception indicating that a connection could not be established.
@@ -104,5 +106,7 @@
 - initWithHost: (OFString*)host
 	  port: (uint16_t)port
 	socket: (id)socket
 	 errNo: (int)errNo;
 @end
+
+OF_ASSUME_NONNULL_END