diff --git a/django/contrib/admin/utils.py b/django/contrib/admin/utils.py
index 2d8c4b9..c8b59b3 100644
--- a/django/contrib/admin/utils.py
+++ b/django/contrib/admin/utils.py
@@ -68,7 +68,7 @@ def quote(s):
     res = list(s)
     for i in range(len(res)):
         c = res[i]
-        if c in """:/_#?;@&=+$,"[]<>%\\""":
+        if c in """:/_#?;@&=+$,"[]<>%\n\\""":
             res[i] = '_%02X' % ord(c)
     return ''.join(res)