1 files changed, 14 insertions, 9 deletions
diff --git a/CPP/7zip/Archive/GZip/GZipUpdate.cpp b/CPP/7zip/Archive/GZip/GZipUpdate.cpp
index 1f5ebd0e..8f8a2c4f 100755
--- a/CPP/7zip/Archive/GZip/GZipUpdate.cpp
+++ b/CPP/7zip/Archive/GZip/GZipUpdate.cpp
@@ -22,11 +22,16 @@ namespace NGZip {
 
 static const CMethodId kMethodId_Deflate = 0x040108;
 
-static const Byte kHostOS = NFileHeader::NHostOS::kFAT;
+static const Byte kHostOS =
+  #ifdef _WIN32
+  NFileHeader::NHostOS::kFAT;
+  #else
+  NFileHeader::NHostOS::kUnix;
+  #endif
 
 HRESULT UpdateArchive(
     DECL_EXTERNAL_CODECS_LOC_VARS
-    IInStream * /* inStream */, 
+    IInStream * /* inStream */,
     UInt64 unpackSize,
     ISequentialOutStream *outStream,
     const CItem &newItem,
@@ -73,17 +78,17 @@ HRESULT UpdateArchive(
     if (!deflateEncoder)
       return E_NOTIMPL;
 
-    NWindows::NCOM::CPropVariant properties[] = 
-    { 
-      compressionMethod.Algo, 
-      compressionMethod.NumPasses, 
+    NWindows::NCOM::CPropVariant properties[] =
+    {
+      compressionMethod.Algo,
+      compressionMethod.NumPasses,
       compressionMethod.NumFastBytes,
       compressionMethod.NumMatchFinderCycles
     };
-    PROPID propIDs[] = 
-    { 
+    PROPID propIDs[] =
+    {
       NCoderPropID::kAlgorithm,
-      NCoderPropID::kNumPasses, 
+      NCoderPropID::kNumPasses,
       NCoderPropID::kNumFastBytes,
       NCoderPropID::kMatchFinderCycles
     };