diff --git a/specification/scripts/generator.py b/specification/scripts/generator.py
index d6a1afe..5f9d0b6 100644
--- a/specification/scripts/generator.py
+++ b/specification/scripts/generator.py
@@ -516,9 +516,10 @@ class OutputGenerator:
         # Generator can be used without writing to a file.
         if self.genOpts.filename is not None:
             if sys.platform == 'win32':
-                directory = Path(self.genOpts.directory)
+                directory = self.genOpts.directory
                 if not os.path.exists(directory):
                     os.makedirs(directory)
-                self.outFile = io.open(directory / self.genOpts.filename, 'w', encoding='utf-8')
+                self.outFile = io.open(directory + '/' + self.genOpts.filename, 'w', encoding='utf-8')
             else:
                 filename = self.genOpts.directory + '/' + self.genOpts.filename