diff --git a/js/public/Value.h b/js/public/Value.h
index 6395b8b0668..610f99e8764 100644
--- a/js/public/Value.h
+++ b/js/public/Value.h
@@ -321,7 +321,6 @@ typedef union jsval_layout
             int32_t        i32;
             uint32_t       u32;
             JSWhyMagic     why;
-            uintptr_t      word;
         } payload;
     } s;
     double asDouble;