diff --git a/samples/artprov/artbrows.cpp b/samples/artprov/artbrows.cpp
index e4436c9a11..b4a6f622c1 100644
--- a/samples/artprov/artbrows.cpp
+++ b/samples/artprov/artbrows.cpp
@@ -39,7 +39,7 @@
         else \
             ind = 0; \
         list->InsertItem(index, wxT(#id), ind); \
-        list->SetItemData(index, (long)id); \
+        list->SetItemPtrData(index, wxPtrToUInt(id)); \
         index++; \
     }