diff --git a/Lib/mailcap.py b/Lib/mailcap.py
index b2ddacd..04077ba 100644
--- a/Lib/mailcap.py
+++ b/Lib/mailcap.py
@@ -22,8 +22,8 @@
             fp = open(mailcap, 'r')
         except IOError:
             continue
-        morecaps = readmailcapfile(fp)
-        fp.close()
+        with fp:
+            morecaps = readmailcapfile(fp)
         for key, value in morecaps.iteritems():
             if not key in caps:
                 caps[key] = value