diff --git a/dist/1.x/ByteBeat.js b/dist/1.x/ByteBeat.js
index d774a71..478e03f 100644
--- a/dist/1.x/ByteBeat.js
+++ b/dist/1.x/ByteBeat.js
@@ -298,7 +298,7 @@
 
     static s_fnHeader = (function() {
       const keys = {
-        import: true,
+        'import': true,
       };
       const windowKeep = new Set([
         'parseInt',
diff --git a/dist/1.x/ByteBeat.module.js b/dist/1.x/ByteBeat.module.js
index 7a2044a..0e1e3fb 100644
--- a/dist/1.x/ByteBeat.module.js
+++ b/dist/1.x/ByteBeat.module.js
@@ -292,7 +292,7 @@ class ByteBeatCompiler {
 
   static s_fnHeader = (function() {
     const keys = {
-      import: true,
+      'import': true,
     };
     const windowKeep = new Set([
       'parseInt',