diff --git a/include/wx/msw/ole/safearray.h b/include/wx/msw/ole/safearray.h
index 04dc335fdc..fb5c70a399 100644
--- a/include/wx/msw/ole/safearray.h
+++ b/include/wx/msw/ole/safearray.h
@@ -267,7 +267,7 @@ public:
 
         internT* data;
 
-        if ( FAILED( SafeArrayPtrOfIndex(m_array, indices, (void**)&data) ) )
+        if ( FAILED( SafeArrayPtrOfIndex(m_array, (LONG *)indices, (void**)&data) ) )
             return false;
 
         return Convertor::ToArray(element, *data);
@@ -284,7 +284,7 @@ public:
 
         internT* data;
 
-        if ( FAILED( SafeArrayPtrOfIndex(m_array, indices, (void**)&data) ) )
+        if ( FAILED( SafeArrayPtrOfIndex(m_array, (LONG *)indices, (void**)&data) ) )
             return false;
 
         return Convertor::FromArray(*data, element);
diff --git a/src/msw/ole/safearray.cpp b/src/msw/ole/safearray.cpp
index db62ad2fd9..276c906565 100644
--- a/src/msw/ole/safearray.cpp
+++ b/src/msw/ole/safearray.cpp
@@ -74,7 +74,7 @@ bool wxSafeArrayBase::GetLBound(size_t dim, long& bound) const
     wxCHECK_MSG( m_array, false, wxS("Uninitialized safe array") );
     wxCHECK_MSG( dim > 0, false, wxS("Invalid dimension index") );
 
-    HRESULT hr = SafeArrayGetLBound(m_array, dim, &bound);
+    HRESULT hr = SafeArrayGetLBound(m_array, dim, (LONG*)&bound);
     if ( FAILED(hr) )
     {
         wxLogApiError(wxS("SafeArrayGetLBound()"), hr);
@@ -88,7 +88,7 @@ bool wxSafeArrayBase::GetUBound(size_t dim, long& bound) const
     wxCHECK_MSG( m_array, false, wxS("Uninitialized safe array") );
     wxCHECK_MSG( dim > 0, false, wxS("Invalid dimension index") );
 
-    HRESULT hr = SafeArrayGetUBound(m_array, dim, &bound);
+    HRESULT hr = SafeArrayGetUBound(m_array, dim, (LONG*)&bound);
     if ( FAILED(hr) )
     {
         wxLogApiError(wxS("SafeArrayGetUBound()"), hr);