diff --git a/meson.build b/meson.build
index d5836037b..ee5deb714 100644
--- a/meson.build
+++ b/meson.build
@@ -1884,7 +1884,6 @@ have_sh = find_program('sh', required : false).found() # For glib-gettextize
 
 # FIXME: defines in config.h that are not actually used anywhere
 # (we add them for now to minimise the diff)
-glib_conf.set('STDC_HEADERS', 1)
 glib_conf.set('SIZEOF___INT64', 8)
 
 # FIXME: How to detect Solaris? https://github.com/mesonbuild/meson/issues/1578