@@ -21,10 +21,11 @@
 @class OFMutableArray OF_GENERIC(ObjectType);
 @class OFPair OF_GENERIC(FirstType, SecondType);
 
 typedef OFPair OF_GENERIC(OFString *, OFString *) *OFSandboxUnveilPath;
 
+OF_SUBCLASSING_RESTRICTED
 @interface OFSandbox: OFObject <OFCopying>
 {
 	unsigned int _allowsStdIO: 1;
 	unsigned int _allowsReadingFiles: 1;
 	unsigned int _allowsWritingFiles: 1;
@@ -56,11 +57,10 @@
 	unsigned int _allowsUnveil: 1;
 	unsigned int _returnsErrors: 1;
 	OFMutableArray OF_GENERIC(OFSandboxUnveilPath) *_unveiledPaths;
 @public
 	size_t _unveiledPathsIndex;
-	OF_RESERVE_IVARS(OFSandbox, 4)
 }
 
 @property (nonatomic) bool allowsStdIO;
 @property (nonatomic) bool allowsReadingFiles;
 @property (nonatomic) bool allowsWritingFiles;