diff --git a/src/zipios++/zipfile.cpp b/src/zipios++/zipfile.cpp
index 76edc1d222..6811eba518 100644
--- a/src/zipios++/zipfile.cpp
+++ b/src/zipios++/zipfile.cpp
@@ -9,7 +9,9 @@
 #include "zipios_defs.h"
 
 #include "backbuffer.h"
+#if defined(_WIN32)
 #include <Base/FileInfo.h>
+#endif
 
 namespace zipios {
 
@@ -34,7 +36,7 @@ ZipFile::ZipFile( const string &name , int s_off, int e_off
 
   _filename = name ;
   
-#if _WIN32
+#if defined(_WIN32)
   std::wstring wsname = Base::FileInfo(name).toStdWString();
   ifstream _zipfile( wsname.c_str(), ios::in | ios::binary ) ;
 #else
diff --git a/src/zipios++/zipinputstream.cpp b/src/zipios++/zipinputstream.cpp
index b048a5995c..606e9e2584 100644
--- a/src/zipios++/zipinputstream.cpp
+++ b/src/zipios++/zipinputstream.cpp
@@ -5,7 +5,9 @@
 
 #include "zipinputstreambuf.h"
 #include "zipinputstream.h"
+#if defined(_WIN32)
 #include <Base/FileInfo.h>
+#endif
 
 using std::istream;
 
@@ -25,7 +27,7 @@ ZipInputStream::ZipInputStream( const std::string &filename, std::streampos pos
   : std::istream( 0 ),
     ifs( 0 )
 {
-#if _WIN32
+#if defined(_WIN32)
   std::wstring wsname = Base::FileInfo(filename).toStdWString();
   ifs = new std::ifstream( wsname.c_str(), std::ios::in |std:: ios::binary ) ;
 #else