diff --git a/include/wx/tarstrm.h b/include/wx/tarstrm.h
index 8a5baf667579..07fb87ba3fbf 100644
--- a/include/wx/tarstrm.h
+++ b/include/wx/tarstrm.h
@@ -43,7 +43,7 @@ enum wxTarFormat
 /////////////////////////////////////////////////////////////////////////////
 // wxTarNotifier
 
-class wxTarNotifier
+class WXDLLIMPEXP_BASE wxTarNotifier
 {
 public:
     virtual ~wxTarNotifier() { }
@@ -55,7 +55,7 @@ class wxTarNotifier
 /////////////////////////////////////////////////////////////////////////////
 // Tar Entry - hold the meta data for a file in the tar
 
-class wxTarEntry : public wxArchiveEntry
+class WXDLLIMPEXP_BASE wxTarEntry : public wxArchiveEntry
 {
 public:
     wxTarEntry(const wxString& name = wxEmptyString,
@@ -148,7 +148,7 @@ class wxTarEntry : public wxArchiveEntry
 /////////////////////////////////////////////////////////////////////////////
 // wxTarInputStream
 
-class wxTarInputStream : public wxArchiveInputStream
+class WXDLLIMPEXP_BASE wxTarInputStream : public wxArchiveInputStream
 {
 public:
     typedef wxTarEntry entry_type;
@@ -203,7 +203,7 @@ class wxTarInputStream : public wxArchiveInputStream
 /////////////////////////////////////////////////////////////////////////////
 // wxTarOutputStream
 
-class wxTarOutputStream : public wxArchiveOutputStream
+class WXDLLIMPEXP_BASE wxTarOutputStream : public wxArchiveOutputStream
 {
 public:
     wxTarOutputStream(wxOutputStream& stream,
@@ -295,7 +295,7 @@ typedef wxArchiveIterator<wxTarInputStream,
 /////////////////////////////////////////////////////////////////////////////
 // wxTarClassFactory
 
-class wxTarClassFactory : public wxArchiveClassFactory
+class WXDLLIMPEXP_BASE wxTarClassFactory : public wxArchiveClassFactory
 {
 public:
     typedef wxTarEntry        entry_type;