diff --git a/include/wx/msw/ole/oleutils.h b/include/wx/msw/ole/oleutils.h
index 50286a3c40..14818e3d7f 100644
--- a/include/wx/msw/ole/oleutils.h
+++ b/include/wx/msw/ole/oleutils.h
@@ -231,14 +231,14 @@ private:
 // Convert variants
 class WXDLLIMPEXP_BASE wxVariant;
 
-bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant) ;
-bool wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant) ;
+WXDLLEXPORT bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant);
+WXDLLEXPORT bool wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant);
 
 // Convert string to Unicode
-BSTR wxConvertStringToOle(const wxString& str);
+WXDLLEXPORT BSTR wxConvertStringToOle(const wxString& str);
 
 // Convert string from BSTR to wxString
-wxString wxConvertStringFromOle(BSTR bStr);
+WXDLLEXPORT wxString wxConvertStringFromOle(BSTR bStr);
 
 #else // !wxUSE_OLE
 
diff --git a/src/msw/ole/automtn.cpp b/src/msw/ole/automtn.cpp
index 86156519cb..1bccfebca1 100644
--- a/src/msw/ole/automtn.cpp
+++ b/src/msw/ole/automtn.cpp
@@ -544,7 +544,7 @@ bool wxAutomationObject::CreateInstance(const wxString& classId) const
 }
 
 
-bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant)
+WXDLLEXPORT bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant)
 {
     ClearVariant(&oleVariant);
     if (variant.IsNull())
@@ -666,7 +666,7 @@ bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant)
 #define VT_TYPEMASK 0xfff
 #endif
 
-bool wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant)
+WXDLLEXPORT bool wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant)
 {
     switch (oleVariant.vt & VT_TYPEMASK)
     {
diff --git a/src/msw/ole/oleutils.cpp b/src/msw/ole/oleutils.cpp
index 8493a938ef..6c9e409042 100644
--- a/src/msw/ole/oleutils.cpp
+++ b/src/msw/ole/oleutils.cpp
@@ -66,7 +66,7 @@ bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount)
   return false;
 }
 
-BSTR wxConvertStringToOle(const wxString& str)
+WXDLLEXPORT BSTR wxConvertStringToOle(const wxString& str)
 {
 /*
     unsigned int len = strlen((const char*) str);
@@ -80,7 +80,7 @@ BSTR wxConvertStringToOle(const wxString& str)
     return bstr.Get();
 }
 
-wxString wxConvertStringFromOle(BSTR bStr)
+WXDLLEXPORT wxString wxConvertStringFromOle(BSTR bStr)
 {
 #if wxUSE_UNICODE
     wxString str(bStr);