2 files changed, 3 insertions, 1 deletions
diff --git a/ext/fg/float.html b/ext/fg/float.html
index 07f2d58b..0133e653 100644
--- a/ext/fg/float.html
+++ b/ext/fg/float.html
@@ -34,6 +34,8 @@
         <script src="/mixed/lib/jquery.min.js"></script>
         <script src="/mixed/lib/wanakana.min.js"></script>
 
+        <script src="/mixed/js/extension.js"></script>
+
         <script src="/fg/js/api.js"></script>
         <script src="/fg/js/util.js"></script>
         <script src="/fg/js/document.js"></script>
diff --git a/ext/fg/js/float.js b/ext/fg/js/float.js
index 090839a1..c0ec8a15 100644
--- a/ext/fg/js/float.js
+++ b/ext/fg/js/float.js
@@ -23,7 +23,7 @@ class DisplayFloat extends Display {
         this.autoPlayAudioTimer = null;
         this.styleNode = null;
 
-        this.dependencies = {...this.dependencies, ...{docRangeFromPoint, docSentenceExtract}};
+        this.dependencies = Object.assign({}, this.dependencies, {docRangeFromPoint, docSentenceExtract});
 
         $(window).on('message', utilAsync(this.onMessage.bind(this)));
     }