diff --git a/src/zipios++/zipfile.cpp b/src/zipios++/zipfile.cpp
index 90a281c358..76edc1d222 100644
--- a/src/zipios++/zipfile.cpp
+++ b/src/zipios++/zipfile.cpp
@@ -9,6 +9,7 @@
 #include "zipios_defs.h"
 
 #include "backbuffer.h"
+#include <Base/FileInfo.h>
 
 namespace zipios {
 
@@ -33,7 +34,12 @@ ZipFile::ZipFile( const string &name , int s_off, int e_off
 
   _filename = name ;
   
+#if _WIN32
+  std::wstring wsname = Base::FileInfo(name).toStdWString();
+  ifstream _zipfile( wsname.c_str(), ios::in | ios::binary ) ;
+#else
   ifstream _zipfile( name.c_str(), ios::in | ios::binary ) ;
+#endif
   init( _zipfile ) ;
 }
 
diff --git a/src/zipios++/zipinputstream.cpp b/src/zipios++/zipinputstream.cpp
index b2363345cb..b048a5995c 100644
--- a/src/zipios++/zipinputstream.cpp
+++ b/src/zipios++/zipinputstream.cpp
@@ -5,6 +5,7 @@
 
 #include "zipinputstreambuf.h"
 #include "zipinputstream.h"
+#include <Base/FileInfo.h>
 
 using std::istream;
 
@@ -24,7 +25,12 @@ ZipInputStream::ZipInputStream( const std::string &filename, std::streampos pos
   : std::istream( 0 ),
     ifs( 0 )
 {
+#if _WIN32
+  std::wstring wsname = Base::FileInfo(filename).toStdWString();
+  ifs = new std::ifstream( wsname.c_str(), std::ios::in |std:: ios::binary ) ;
+#else
   ifs = new std::ifstream( filename.c_str(), std::ios::in |std:: ios::binary ) ;
+#endif
   izf = new ZipInputStreambuf( ifs->rdbuf(), pos ) ;
 //  this->rdbuf( izf ) ; is replaced by:
   this->init( izf ) ;