@@ -16,10 +16,12 @@
 
 #import "OFObject.h"
 #import "OFString.h"
 #import "OFZIPArchiveEntry.h"
 
+OF_ASSUME_NONNULL_BEGIN
+
 #ifndef DOXYGEN
 @class OFArray OF_GENERIC(ObjectType);
 @class OFMutableArray OF_GENERIC(ObjectType);
 @class OFMutableDictionary OF_GENERIC(KeyType, ObjectType);
 #endif
@@ -112,5 +114,7 @@
  * @param path The path to the file inside the archive
  * @return A stream for reading the specified file form the archive
  */
 - (OFStream*)streamForReadingFile: (OFString*)path;
 @end
+
+OF_ASSUME_NONNULL_END