diff --git a/configure.ac b/configure.ac
index b078c4f4..80ea3872 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 # configure.ac
 
-AC_INIT(tmux, master)
+AC_INIT(tmux, 2.4)
 AC_PREREQ([2.60])
 
 AC_CONFIG_AUX_DIR(etc)
@@ -35,7 +35,6 @@ AC_USE_SYSTEM_EXTENSIONS
 test "$sysconfdir" = '${prefix}/etc' && sysconfdir=/etc
 
 # Is this --enable-debug?
-enable_debug=yes
 AC_ARG_ENABLE(
 	debug,
 	AC_HELP_STRING(--enable-debug, enable debug build flags),