@@ -14,11 +14,10 @@
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
 #import "OFObject.h"
-#import "OFASN1DERRepresentation.h"
 #import "OFJSONRepresentation.h"
 #import "OFMessagePackRepresentation.h"
 #import "OFSerialization.h"
 
 OF_ASSUME_NONNULL_BEGIN
@@ -28,15 +27,15 @@
  *
  * @brief A class for representing null values in collections.
  */
 OF_SUBCLASSING_RESTRICTED
 @interface OFNull: OFObject <OFCopying, OFSerialization, OFJSONRepresentation,
-    OFMessagePackRepresentation, OFASN1DERRepresentation>
+    OFMessagePackRepresentation>
 /*!
  * @brief Returns an OFNull singleton.
  *
  * @return An OFNull singleton
  */
 + (OFNull *)null;
 @end
 
 OF_ASSUME_NONNULL_END