@@ -41,11 +41,11 @@
  * @param target The target of the processing instruction
  * @param text The text of the processing instruction
  */
 -			  (void)parser: (OFXMLParser *)parser
   foundProcessingInstructionWithTarget: (OFString *)target
-				  text: (OFString *)text;
+				  text: (nullable OFString *)text;
 
 /**
  * @brief This callback is called when the XML parser found the start of a new
  *	  tag.
  *