diff --git a/configure b/configure
index 6b5e712e..2aaf5a2c 100755
--- a/configure
+++ b/configure
@@ -5930,3 +5930,9 @@ $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
 fi
 
 
+
+echo
+echo
+echo "IMPORTANT! If you upgrade, be sure to read http://www.mailpiler.org/en/upgrade.html"
+echo
+echo
diff --git a/configure.in b/configure.in
index 387ad734..0d016be4 100644
--- a/configure.in
+++ b/configure.in
@@ -399,3 +399,9 @@ OBJS="dirs.o base64.o misc.o counters.o cfg.o sig.o decoder.o list.o parser.o pa
 AC_CONFIG_FILES([Makefile src/Makefile etc/Makefile util/Makefile init.d/Makefile test/Makefile contrib/imap/Makefile])
 AC_OUTPUT
 
+
+echo
+echo
+echo "IMPORTANT! If you upgrade, be sure to read http://www.mailpiler.org/en/upgrade.html"
+echo
+echo