diff --git a/engine/src/flutter/tools/fuchsia/fidl/gen_response_file.py b/engine/src/flutter/tools/fuchsia/fidl/gen_response_file.py
index c4efdc328c3..c44f4784b3b 100755
--- a/engine/src/flutter/tools/fuchsia/fidl/gen_response_file.py
+++ b/engine/src/flutter/tools/fuchsia/fidl/gen_response_file.py
@@ -86,8 +86,6 @@ def main():
 
   response_file = []
 
-  response_file.append('--experimental new_syntax_only')
-
   if args.json:
     response_file.append("--json %s" % args.json)