diff --git a/plyer/platforms/win/filechooser.py b/plyer/platforms/win/filechooser.py
index 8a26fe3c..c7ab20cf 100644
--- a/plyer/platforms/win/filechooser.py
+++ b/plyer/platforms/win/filechooser.py
@@ -41,6 +41,7 @@ class Win32FileChooser:
     title = None
     icon = None
     show_hidden = False
+    buffer_size = 4096
 
     def __init__(self, *args, **kwargs):
         self._handle_selection = kwargs.pop(
@@ -76,10 +77,7 @@ def run(self):
                 args["Title"] = self.title if self.title else "Pick a file..."
                 args["CustomFilter"] = 'Other file types\x00*.*\x00'
                 args["FilterIndex"] = 1
-                file = ""
-                if "File" in args:
-                    file = args["File"]
-                args["File"] = file + ("\x00" * 4096)
+                args["MaxFile"] = self.buffer_size
 
                 # e.g. open_file(filters=['*.txt', '*.py'])
                 filters = ""