diff --git a/snakehouse/satella.py b/snakehouse/satella.py
index 58a64f7ff508d9addcadaa1d0e747a76eeddf5ff..2453fcdbe37090ffffac8fede6a58d444fa19664 100644
--- a/snakehouse/satella.py
+++ b/snakehouse/satella.py
@@ -4,6 +4,7 @@ cut off the dependency and allow earlier Pythons to use
 snakehouse.
 """
 import typing as tp
+import os
 
 
 def _has_separator(path: str) -> bool:
@@ -81,4 +82,4 @@ def split(path: str) -> tp.List[str]:
         data = list(os.path.split(data[0])) + data[1:]
     return dataator(data[0]):
         data = list(os.path.split(data[0])) + data[1:]
-    return data
\ No newline at end of file
+    return data