--- a/meson.build
+++ b/meson.build
@@ -55,8 +55,7 @@
 stability_version_number = (major_version != 0 ? minor_version : micro_version)
 stable = (stability_version_number % 2 == 0)
 
-conf.set10('BABL_UNSTABLE', not stable, Description:
-  'Define to 1 if this is an unstable version of BABL.')
+conf.set10('BABL_UNSTABLE', not stable)
 
 conf.set       ('BABL_MAJOR_VERSION',    '@0@'.format(major_version))
 conf.set       ('BABL_MINOR_VERSION',    '@0@'.format(minor_version))