diff --git a/src/hb-algs.hh b/src/hb-algs.hh
index b00015e08..ce17bd44d 100644
--- a/src/hb-algs.hh
+++ b/src/hb-algs.hh
@@ -655,7 +655,7 @@ hb_bsearch_impl (V** out,
 #pragma GCC diagnostic ignored "-Wcast-align"
     V* p = (V*) (((const char *) base) + (mid * stride));
 #pragma GCC diagnostic pop
-    int c = compar ((const void *) &key, (const void *) p, ds...);
+    int c = compar ((const void *) hb_addressof (key), (const void *) p, ds...);
     if (c < 0)
       max = mid - 1;
     else if (c > 0)