diff --git a/django/contrib/staticfiles/management/commands/collectstatic.py b/django/contrib/staticfiles/management/commands/collectstatic.py
index 8882ae20db..10f9fdd016 100644
--- a/django/contrib/staticfiles/management/commands/collectstatic.py
+++ b/django/contrib/staticfiles/management/commands/collectstatic.py
@@ -100,7 +100,7 @@ Type 'yes' to continue, or 'no' to cancel: """)
         except (OSError, NotImplementedError):
             source_last_modified = None
         if prefix:
-            destination = '/'.join([prefix, source])
+            destination = os.path.join(prefix, source)
         else:
             destination = source
         symlink = options['link']
diff --git a/django/contrib/staticfiles/storage.py b/django/contrib/staticfiles/storage.py
index eb0eabf861..56e5c0dec0 100644
--- a/django/contrib/staticfiles/storage.py
+++ b/django/contrib/staticfiles/storage.py
@@ -82,6 +82,6 @@ class AppStaticStorage(FileSystemStorage):
         prefix = self.get_prefix()
         for path in utils.get_files(self, ignore_patterns):
             if prefix:
-                path = '/'.join([prefix, path])
+                path = os.path.join(prefix, path)
             files.append(path)
         return files
diff --git a/django/contrib/staticfiles/utils.py b/django/contrib/staticfiles/utils.py
index 428bb69b1e..187a6d3429 100644
--- a/django/contrib/staticfiles/utils.py
+++ b/django/contrib/staticfiles/utils.py
@@ -1,18 +1,17 @@
+import os
 import fnmatch
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 
 def get_files(storage, ignore_patterns=[], location=''):
     """
-    Recursively walk the storage directories gathering a complete list of files
-    that should be copied, returning this list.
-    
+    Recursively walk the storage directories gathering a complete
+    list of files that should be copied, returning this list.
     """
     def is_ignored(path):
         """
         Return True or False depending on whether the ``path`` should be
         ignored (if it matches any pattern in ``ignore_patterns``).
-        
         """
         for pattern in ignore_patterns:
             if fnmatch.fnmatchcase(path, pattern):
@@ -20,14 +19,14 @@ def get_files(storage, ignore_patterns=[], location=''):
         return False
 
     directories, files = storage.listdir(location)
-    static_files = [location and '/'.join([location, fn]) or fn
+    static_files = [location and os.path.join(location, fn) or fn
                     for fn in files
                     if not is_ignored(fn)]
     for dir in directories:
         if is_ignored(dir):
             continue
         if location:
-            dir = '/'.join([location, dir])
+            dir = os.path.join(location, dir)
         static_files.extend(get_files(storage, ignore_patterns, dir))
     return static_files