diff --git a/common/projet_config.cpp b/common/projet_config.cpp
index e4a5dc4d0f..99ddc953ed 100644
--- a/common/projet_config.cpp
+++ b/common/projet_config.cpp
@@ -696,6 +696,50 @@ void PARAM_CFG_WXSTRING::SaveParam( wxConfigBase* aConfig )
 }
 
 
+
+PARAM_CFG_FILENAME::PARAM_CFG_FILENAME( const wxChar* ident,
+                                        wxString*     ptparam,
+                                        const wxChar* group ) :
+    PARAM_CFG_BASE( ident, PARAM_FILENAME, group )
+{
+    m_Pt_param = ptparam;
+}
+
+
+/** ReadParam
+ * read the value of parameter this stored in aConfig
+ * @param aConfig = the wxConfigBase that store the parameter
+ */
+void PARAM_CFG_FILENAME::ReadParam( wxConfigBase* aConfig )
+{
+    if( m_Pt_param == NULL || aConfig == NULL )
+        return;
+    wxString prm = aConfig->Read( m_Ident );
+    // filesnames are stored using Unix notation
+    // under Window we must use \ instead of /
+    // mainly if there is a server name in path (something like \\server\kicad)
+#ifdef __WINDOWS__
+    prm.Replace(wxT("/"), wxT("\\"));
+#endif
+    *m_Pt_param = prm;
+}
+
+
+/** SaveParam
+ * save the value of parameter this stored in aConfig
+ * @param aConfig = the wxConfigBase that can store the parameter
+ */
+void PARAM_CFG_FILENAME::SaveParam( wxConfigBase* aConfig )
+{
+    if( m_Pt_param == NULL || aConfig == NULL )
+        return;
+    wxString prm = *m_Pt_param;
+    // filenames are stored using Unix notation
+    prm.Replace(wxT("\\"), wxT("/") );
+    aConfig->Write( m_Ident, prm );
+}
+
+
 PARAM_CFG_LIBNAME_LIST::PARAM_CFG_LIBNAME_LIST( const wxChar*  ident,
                                                 wxArrayString* ptparam,
                                                 const wxChar*  group ) :
@@ -725,6 +769,12 @@ void PARAM_CFG_LIBNAME_LIST::ReadParam( wxConfigBase* aConfig )
         libname = aConfig->Read( id_lib, wxT( "" ) );
         if( libname.IsEmpty() )
             break;
+        // filesnames are stored using Unix notation
+        // under Window we must use \ instead of /
+        // mainly if there is a server name in path (something like \\server\kicad)
+#ifdef __WINDOWS__
+        libname.Replace(wxT("/"), wxT("\\"));
+#endif
         libname_list->Add( libname );
     }
 }
@@ -742,12 +792,16 @@ void PARAM_CFG_LIBNAME_LIST::SaveParam( wxConfigBase* aConfig )
 
     unsigned       indexlib = 0;
     wxString       configkey;
+    wxString       libname;
     for( ; indexlib < libname_list->GetCount(); indexlib++ )
     {
         configkey = m_Ident;
 
         // We use indexlib+1 because first lib name is LibName1
         configkey << (indexlib + 1);
-        aConfig->Write( configkey, libname_list->Item( indexlib ) );
+        libname = libname_list->Item( indexlib );
+        // filenames are stored using Unix notation
+        libname.Replace(wxT("\\"), wxT("/") );
+        aConfig->Write( configkey, libname );
     }
 }
diff --git a/cvpcb/cfg.cpp b/cvpcb/cfg.cpp
index e4ced33120..ceac7a9005 100644
--- a/cvpcb/cfg.cpp
+++ b/cvpcb/cfg.cpp
@@ -40,7 +40,7 @@ PARAM_CFG_ARRAY& CVPCB_MAINFRAME::GetProjectFileParameters( void )
                                                                GROUPEQU ) );
     m_projectFileParams.push_back( new PARAM_CFG_WXSTRING( wxT( "NetIExt" ),
                                                            &m_NetlistFileExtension ) );
-    m_projectFileParams.push_back( new PARAM_CFG_WXSTRING( wxT( "LibDir" ),
+    m_projectFileParams.push_back( new PARAM_CFG_FILENAME( wxT( "LibDir" ),
                                                            &m_UserLibraryPath,
                                                            GROUPLIB ) );
 
diff --git a/eeschema/eeschema_config.cpp b/eeschema/eeschema_config.cpp
index c2fa1b105d..8f9f2a55e6 100644
--- a/eeschema/eeschema_config.cpp
+++ b/eeschema/eeschema_config.cpp
@@ -1,6 +1,6 @@
-/******************/
-/** eeconfig.cpp **/
-/******************/
+/**
+ * @file eeschema_config.cpp
+ */
 
 #include "fctsys.h"
 #include "appl_wxstruct.h"
@@ -265,7 +265,7 @@ PARAM_CFG_ARRAY& SCH_EDIT_FRAME::GetProjectFileParameters( void )
     if( !m_projectFileParams.empty() )
         return m_projectFileParams;
 
-    m_projectFileParams.push_back( new PARAM_CFG_WXSTRING( wxT( "LibDir" ),
+    m_projectFileParams.push_back( new PARAM_CFG_FILENAME( wxT( "LibDir" ),
                                                            &m_UserLibraryPath ) );
     m_projectFileParams.push_back( new PARAM_CFG_LIBNAME_LIST( wxT( "LibName" ),
                                                                &m_ComponentLibFiles,
diff --git a/include/param_config.h b/include/param_config.h
index 8457cdfb4f..7a64c4058d 100644
--- a/include/param_config.h
+++ b/include/param_config.h
@@ -20,6 +20,7 @@ enum paramcfg_id
     PARAM_BOOL,
     PARAM_LIBNAME_LIST,
     PARAM_WXSTRING,
+    PARAM_FILENAME,
     PARAM_COMMAND_ERASE,
     PARAM_FIELDNAME_LIST
 };
@@ -174,6 +175,24 @@ public:
     virtual void SaveParam( wxConfigBase* aConfig );
 };
 
+/**
+ * Configuration parameter - PARAM_CFG_FILENAME Class
+ * Same as PARAM_CFG_WXSTRING, but stores "\" as "/".
+ * and replace "/" by "\" under Windows.
+ * Used to store paths and filenames in config files
+ */
+class PARAM_CFG_FILENAME     : public PARAM_CFG_BASE
+{
+public:
+    wxString* m_Pt_param;    ///<  Pointer to the parameter value
+
+public:
+    PARAM_CFG_FILENAME( const wxChar* ident, wxString* ptparam, const wxChar* group = NULL );
+    virtual void ReadParam( wxConfigBase* aConfig );
+    virtual void SaveParam( wxConfigBase* aConfig );
+};
+
+
 
 class PARAM_CFG_LIBNAME_LIST : public PARAM_CFG_BASE
 {
diff --git a/pcbnew/pcbnew_config.cpp b/pcbnew/pcbnew_config.cpp
index 02b9542dca..38f9309348 100644
--- a/pcbnew/pcbnew_config.cpp
+++ b/pcbnew/pcbnew_config.cpp
@@ -202,7 +202,7 @@ PARAM_CFG_ARRAY& WinEDA_PcbFrame::GetProjectFileParameters()
     if( !m_projectFileParams.empty() )
         return m_projectFileParams;
 
-    m_projectFileParams.push_back( new PARAM_CFG_WXSTRING( wxT( "LibDir" ),&g_UserLibDirBuffer,
+    m_projectFileParams.push_back( new PARAM_CFG_FILENAME( wxT( "LibDir" ),&g_UserLibDirBuffer,
                                                            GROUPLIB ) );
     m_projectFileParams.push_back( new PARAM_CFG_LIBNAME_LIST( wxT( "LibName" ), &g_LibName_List,
                                                                GROUPLIB ) );