@@ -14,10 +14,12 @@
  * file.
  */
 
 #import "OFException.h"
 
+OF_ASSUME_NONNULL_BEGIN
+
 /*!
  * @class OFUndefinedKeyException \
  *	  OFUndefinedKeyException.h ObjFW/OFUndefinedKeyException.h
  *
  * @brief An exception indicating that a key for Key Value Coding is undefined.
@@ -90,5 +92,7 @@
  */
 - initWithObject: (id)object
 	     key: (OFString*)key
 	   value: (id)value;
 @end
+
+OF_ASSUME_NONNULL_END