diff --git a/circup/__init__.py b/circup/__init__.py
index 8d568eb..6d690e1 100644
--- a/circup/__init__.py
+++ b/circup/__init__.py
@@ -276,9 +276,9 @@ class Module:
         print(url.scheme)
 
         print(f"url.path: {url.path}")
-        if url.path.endswith("/"):
+        if url.path.endswith("/") if isinstance(backend, WebBackend) else self.path.endswith(os.sep):
             self.file = None
-            self.name = url.path.split("/")[-2]
+            self.name = self.path.split("/" if isinstance(backend, WebBackend) else os.sep)[-2]
         else:
             self.file = os.path.basename(url.path)
             self.name = (
diff --git a/circup/backends.py b/circup/backends.py
index b85ce53..8bfffef 100644
--- a/circup/backends.py
+++ b/circup/backends.py
@@ -612,7 +612,7 @@ class DiskBackend(Backend):
         super().__init__(logger)
         self.LIB_DIR_PATH = "lib"
         self.device_location = device_location
-        self.library_path = self.device_location + "/" + self.LIB_DIR_PATH
+        self.library_path = os.path.join(self.device_location, os.sep + self.LIB_DIR_PATH)
         self.version_info = None
         if boot_out is not None:
             self.version_info = self.parse_boot_out_file(boot_out)