@@ -14,10 +14,12 @@
  * file.
  */
 
 #import "OFException.h"
 
+OF_ASSUME_NONNULL_BEGIN
+
 @class OFXMLParser;
 
 /*!
  * @class OFUnboundPrefixException \
  *	  OFUnboundPrefixException.h ObjFW/OFUnboundPrefixException.h
@@ -58,5 +60,7 @@
  * @return An initialized unbound prefix exception
  */
 - initWithPrefix: (OFString*)prefix
 	  parser: (OFXMLParser*)parser;
 @end
+
+OF_ASSUME_NONNULL_END