diff --git a/src/html/helpfrm.cpp b/src/html/helpfrm.cpp
index 3530eb3f3e..61d4a1b72c 100644
--- a/src/html/helpfrm.cpp
+++ b/src/html/helpfrm.cpp
@@ -131,7 +131,7 @@ class wxHtmlHelpHtmlWindow : public wxHtmlWindow
 // wxHtmlHelpFrame::m_mergedIndex
 //---------------------------------------------------------------------------
 
-WX_DEFINE_ARRAY(const wxHtmlHelpDataItem*, wxHtmlHelpDataItemPtrArray);
+WX_DEFINE_ARRAY_PTR(const wxHtmlHelpDataItem*, wxHtmlHelpDataItemPtrArray);
 
 struct wxHtmlHelpMergedIndexItem
 {