Index: src/OFZIPArchive.m
==================================================================
--- src/OFZIPArchive.m
+++ src/OFZIPArchive.m
@@ -839,12 +839,12 @@
 		@throw [OFNotOpenException exceptionWithObject: self];
 
 	if (_atEndOfStream)
 		return 0;
 
-	if (_archive->_stream.atEndOfStream &&
-	    !_decompressedStream.hasDataInReadBuffer) {
+	if ([_archive->_stream isAtEndOfStream] &&
+	    ![_decompressedStream hasDataInReadBuffer]) {
 		OFStream *oldStream, *oldDecompressedStream;
 		OFSeekableStream *stream;
 
 		if (_archive->_diskNumber >= _archive->_lastDiskNumber)
 			@throw [OFTruncatedDataException exception];
@@ -912,11 +912,11 @@
 }
 
 - (bool)hasDataInReadBuffer
 {
 	return (super.hasDataInReadBuffer ||
-	    _decompressedStream.hasDataInReadBuffer);
+	    [_decompressedStream hasDataInReadBuffer]);
 }
 
 - (int)fileDescriptorForReading
 {
 	return ((id <OFReadyForReadingObserving>)_decompressedStream)