diff --git a/src/hb-bit-set.hh b/src/hb-bit-set.hh
index 76bc524e9..8de6e037f 100644
--- a/src/hb-bit-set.hh
+++ b/src/hb-bit-set.hh
@@ -901,7 +901,7 @@ struct hb_bit_set_t
     {
       auto &cached_page = page_map.arrayZ[i];
       if (cached_page.major == major)
-	return &pages[cached_page.index];
+	return &pages.arrayZ[cached_page.index];
     }
 
     page_map_t map = {major, pages.length};
@@ -913,15 +913,15 @@ struct hb_bit_set_t
       if (unlikely (!resize (pages.length + 1)))
 	return nullptr;
 
-      pages[map.index].init0 ();
-      memmove (page_map + i + 1,
-	       page_map + i,
+      pages.arrayZ[map.index].init0 ();
+      memmove (page_map.arrayZ + i + 1,
+	       page_map.arrayZ + i,
 	       (page_map.length - 1 - i) * page_map.item_size);
       page_map[i] = map;
     }
 
     last_page_lookup = i;
-    return &pages[page_map[i].index];
+    return &pages.arrayZ[page_map.arrayZ[i].index];
   }
   const page_t *page_for (hb_codepoint_t g) const
   {