diff --git a/include/wx/variant.h b/include/wx/variant.h
index 78f41fc575..4956e3283a 100644
--- a/include/wx/variant.h
+++ b/include/wx/variant.h
@@ -242,7 +242,7 @@ protected:
     wxString        m_name;
 };
 
-extern wxVariant wxNullVariant;
+extern wxVariant WXDLLEXPORT wxNullVariant;
 
 #endif
     // _WX_VARIANT_H_
diff --git a/src/common/variant.cpp b/src/common/variant.cpp
index 9deabaa9c6..341329fc28 100644
--- a/src/common/variant.cpp
+++ b/src/common/variant.cpp
@@ -35,7 +35,7 @@
 
 IMPLEMENT_ABSTRACT_CLASS(wxVariantData, wxObject)
 
-wxVariant wxNullVariant;
+wxVariant WXDLLEXPORT wxNullVariant;
 
 /*
  * wxVariantDataList