diff --git a/intl/icu_sources_data.py b/intl/icu_sources_data.py
index f002396..3e9c92d 100644
--- a/intl/icu_sources_data.py
+++ b/intl/icu_sources_data.py
@@ -19,7 +19,9 @@ import subprocess
 import sys
 import tempfile
 
-from mozpack import path as mozpath
+# Close enough
+import os.path as mozpath
+mozpath.normsep = lambda p: p
 
 
 def find_source_file(dir, filename):