@@ -14,10 +14,12 @@
  * file.
  */
 
 #import "OFException.h"
 
+OF_ASSUME_NONNULL_BEGIN
+
 @class OFURL;
 
 /*!
  * @class OFUnsupportedProtocolException \
  *	  OFUnsupportedProtocolException.h \
@@ -50,5 +52,7 @@
  * @param URL The URL whose protocol is unsupported
  * @return An initialized unsupported protocol exception
  */
 - initWithURL: (OFURL*)URL;
 @end
+
+OF_ASSUME_NONNULL_END