diff --git a/ts2panda/scripts/generate_plugin.py b/ts2panda/scripts/generate_plugin.py
index 7b3e660db281b185aaa48fdda7fd781eee3451f3..0f7fe8e3dd59a070e541b11aa56b2f4d77466ccf 100755
--- a/ts2panda/scripts/generate_plugin.py
+++ b/ts2panda/scripts/generate_plugin.py
@@ -93,10 +93,10 @@ def gen_java_method(input_arguments):
     (out_dir, _) = os.path.split(input_arguments.generated_file)
     js_bin_file = os.path.join(out_dir, file_name_pre + JS_BIN_EXT)
 
-    flags = os.O_WRONLY | os.O_CREAT | os.EXCL
+    flags = os.O_WRONLY | os.O_CREAT | os.O_EXCL
     modes = stat.S_IWUSR | stat.S_IRUSR
 
-    with (os.fdopen(out_file, flags, modes), "w") as output: 
+    with os.fdopen(os.open(out_file, flags, modes), "w") as output:
         output.write("/*%s * Generated from Java and JavaScript plugins by ts2abc.%s */%s%s"
                      % (os.linesep, os.linesep, os.linesep, os.linesep))