diff --git a/compressed_archive/compressed_archive.cpp b/compressed_archive/compressed_archive.cpp
index b17dbf2f..6ec58bb2 100644
--- a/compressed_archive/compressed_archive.cpp
+++ b/compressed_archive/compressed_archive.cpp
@@ -57,13 +57,6 @@ std::vector<GUID> supportedFileFormats(_supportedFileFormats, _supportedFileForm
 DEFINE_GUID(IID_InArchive, 0x23170F69, 0x40C1, 0x278A, 0x00, 0x00, 0x00, 0x06, 0x00, 0x60, 0x00, 0x00);
 DEFINE_GUID(IID_ISetCompressCodecsInfoX, 0x23170F69, 0x40C1, 0x278A, 0x00, 0x00, 0x00, 0x04, 0x00, 0x61, 0x00, 0x00);
 
-//#ifdef Q_OS_UNIX
-// Z7_DEFINE_GUID(IID_IOutStream, 0x23170F69, 0x40C1, 0x278A, 0x00, 0x00, 0x00, 0x03, 0x00, 0x04, 0x00, 0x00);
-// Z7_DEFINE_GUID(IID_IInStream, 0x23170F69, 0x40C1, 0x278A, 0x00, 0x00, 0x00, 0x03, 0x00, 0x03, 0x00, 0x00);
-// Z7_DEFINE_GUID(IID_IStreamGetSize, 0x23170F69, 0x40C1, 0x278A, 0x00, 0x00, 0x00, 0x03, 0x00, 0x06, 0x00, 0x00);
-// Z7_DEFINE_GUID(IID_ISequentialInStream, 0x23170F69, 0x40C1, 0x278A, 0x00, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00);
-//#endif
-
 struct SevenZipInterface {
     CreateObjectFunc createObjectFunc;
     GetMethodPropertyFunc getMethodPropertyFunc;