diff --git a/configure.ac b/configure.ac
index 7e1db62e..8aef5a65 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,7 @@
 ## Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
 AC_PREREQ([2.68])
-AC_INIT([mu],[1.7.27],[https://github.com/djcb/mu/issues],[mu])
+AC_INIT([mu],[1.7.28],[https://github.com/djcb/mu/issues],[mu])
 AC_COPYRIGHT([Copyright (C) 2008-2022 Dirk-Jan C. Binnema])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_SRCDIR([mu/mu.cc])
@@ -42,10 +42,10 @@ AC_CHECK_INCLUDES_DEFAULT
 AC_PROG_EGREP
 
 
-extra_flags="-Wformat-security      \
-         -Wstack-protector          \
-         -Wstack-protector-all      \
-         -Wno-cast-function-type    \
+extra_flags="-Wformat-security		\
+         -Wstack-protector		\
+         -Wstack-protector-all		\
+         -Wno-cast-function-type	\
          -Wno-bad-function-cast		\
 	 -Wno-switch-enum"
 
diff --git a/meson.build b/meson.build
index 539c44d7..57fda194 100644
--- a/meson.build
+++ b/meson.build
@@ -18,7 +18,7 @@
 # project setup
 #
 project('mu', ['c', 'cpp'],
-	version: '1.7.27',
+	version: '1.7.28',
 	meson_version: '>= 0.52.0', # debian 10
 	license: 'GPL-3.0-or-later',
 	default_options : [