@@ -17,11 +17,11 @@
 #import "OFObject.h"
 #import "OFMessagePackRepresentation.h"
 
 OF_ASSUME_NONNULL_BEGIN
 
-@class OFDataArray;
+@class OFData;
 
 /*!
  * @class OFMessagePackExtension \
  *	  OFMessagePackExtension.h ObjFW/OFMessagePackExtension.h
  *
@@ -29,11 +29,11 @@
  */
 @interface OFMessagePackExtension: OFObject <OFMessagePackRepresentation,
     OFCopying>
 {
 	int8_t _type;
-	OFDataArray *_data;
+	OFData *_data;
 }
 
 /*!
  * The MessagePack extension type.
  */
@@ -40,11 +40,11 @@
 @property (readonly, nonatomic) int8_t type;
 
 /*!
  * @return The data of the extension.
  */
-@property (readonly, nonatomic) OFDataArray *data;
+@property (readonly, nonatomic) OFData *data;
 
 /*!
  * @brief Creates a new OFMessagePackRepresentation with the specified type and
  *	  data.
  *
@@ -51,11 +51,11 @@
  * @param type The MessagePack extension type
  * @param data The data for the extension
  * @return A new, autoreleased OFMessagePackRepresentation
  */
 + (instancetype)extensionWithType: (int8_t)type
-			     data: (OFDataArray *)data;
+			     data: (OFData *)data;
 
 - init OF_UNAVAILABLE;
 
 /*!
  * @brief Initializes an already allocated OFMessagePackRepresentation with the
@@ -64,9 +64,9 @@
  * @param type The MessagePack extension type
  * @param data The data for the extension
  * @return An initialized OFMessagePackRepresentation
  */
 - initWithType: (int8_t)type
-	  data: (OFDataArray *)data OF_DESIGNATED_INITIALIZER;
+	  data: (OFData *)data OF_DESIGNATED_INITIALIZER;
 @end
 
 OF_ASSUME_NONNULL_END