2 files changed, 8 insertions, 1 deletions
diff --git a/Library/Formula/mutt.rb b/Library/Formula/mutt.rb
index fe573c37b..03310e241 100644
--- a/Library/Formula/mutt.rb
+++ b/Library/Formula/mutt.rb
@@ -19,6 +19,9 @@ class Mutt < Formula
   conflicts_with 'signing-party',
     :because => 'mutt installs private copies of pgpring and pgpewrap'
 
+  conflicts_with 'tin',
+    :because => 'both install mmdf.5 and mbox.5 man pages'
+
   option "with-debug", "Build with debug option enabled"
   option "with-trash-patch", "Apply trash folder patch"
   option "with-slang", "Build against slang instead of ncurses"
diff --git a/Library/Formula/tin.rb b/Library/Formula/tin.rb
index bac6df8ae..8b38a4aa0 100644
--- a/Library/Formula/tin.rb
+++ b/Library/Formula/tin.rb
@@ -5,9 +5,13 @@ class Tin < Formula
   url 'ftp://ftp.tin.org/pub/news/clients/tin/stable/tin-2.0.1.tar.gz'
   sha1 '27d3003d90b8ee4be3a25377986f0f53955a6b5b'
 
+  conflicts_with 'mutt',
+    :because => 'both install mmdf.5 and mbox.5 man pages'
+
   def install
     ENV.enable_warnings
-    system "./configure", "--disable-debug", "--disable-dependency-tracking", "--prefix=#{prefix}", "--mandir=#{man}"
+    system "./configure", "--disable-debug", "--disable-dependency-tracking",
+                          "--prefix=#{prefix}", "--mandir=#{man}"
     system "make build"
     system "make install"
   end