diff --git a/mail/exim/files/Makefile b/mail/exim/files/Makefile
index 5d9a23b4298..77dcab7e941 100644
--- a/mail/exim/files/Makefile
+++ b/mail/exim/files/Makefile
@@ -52,8 +52,11 @@
 #
 # EXIM_GID=42   # the "mail" group
 #
-# Consequently, it is not possible to have the # character present in any
-# setting, but I can't think of any cases where this would be wanted.
+# However, with some versions of "make" this works only if there is no white
+# space between the end of the setting and the #, so it is probably best
+# avoided. However, a consequence of this facility is that it is not possible
+# to have the # character present in any setting, but I can't think of any
+# cases where this would be wanted.
 ###############################################################################
 
 
@@ -264,7 +267,7 @@ EXIM_PERL=perl.o
 # port, start off a header line, and then just pump junk at it for ever. The
 # message_size_limit option would also catch this, but it may not be set.
 
-# HEADER_MAXSIZE=(1024*1024)
+# HEADER_MAXSIZE="(1024*1024)"
 
 
 # The mode of the input directory: The input directory is where messages are
diff --git a/mail/exim/files/md5 b/mail/exim/files/md5
index ebde2238e90..9de05c3e42c 100644
--- a/mail/exim/files/md5
+++ b/mail/exim/files/md5
@@ -1,6 +1,6 @@
 SHA1 (exim-texinfo-3.10.tar.gz) = 2c89fb3073dd079c19682d33a56a46c9fd863978
 RMD160 (exim-texinfo-3.10.tar.gz) = b2cab8092eb776a1551f418e6af94a9ccc8f2023
 MD5 (exim-texinfo-3.10.tar.gz) = c8c2596e6a303f774e0a627e61b4dffc
-SHA1 (exim-3.12.tar.gz) = 658c01610d11d61be41cc758d8ef16724cdcd12b
-RMD160 (exim-3.12.tar.gz) = 1510405939c306b51cacee4cf5f5ddf018486d32
-MD5 (exim-3.12.tar.gz) = 336cd605cb121703af4f22a8c34bb333
+MD5 (exim-3.13.tar.gz) = d4821c12e75814ddeb9a304d58c1e248
+SHA1 (exim-3.13.tar.gz) = 1e5eb1a82d028ca3727563b914e4dec2476002c3
+RMD160 (exim-3.13.tar.gz) = 585af18b40fbf1e955619dcd7fec68e7559686f6