diff --git a/js/src/jsapi.h b/js/src/jsapi.h
index 27d7b4ef8df05291db2c687591a8b4c478025603..5f444aa3341a221b9f8653a3ee2f238ef8c29230 100644
--- a/js/src/jsapi.h
+++ b/js/src/jsapi.h
@@ -1157,7 +1157,11 @@ class JS_PUBLIC_API(ContextOptions) {
         werror_(false),
         strictMode_(false),
         extraWarnings_(false),
-        forEachStatement_(false)
+        forEachStatement_(false),
+        streams_(false)
+#ifdef FUZZING
+        , fuzzing_(false)
+#endif
     {
     }