diff --git a/src/modules/config.js b/src/modules/config.js
index 7ee957ee..f6badaaf 100644
--- a/src/modules/config.js
+++ b/src/modules/config.js
@@ -71,7 +71,7 @@ export const defaultState = {
   highlight: {},
   interfaceLanguage: browserLocale,
   hideScopeNotice: false,
-  useStreamingApi: true,
+  useStreamingApi: false,
   sidebarRight: undefined, // instance default
   scopeCopy: undefined, // instance default
   subjectLineBehavior: undefined, // instance default