diff --git a/configure.ac b/configure.ac
index 0a50ed8..8e30d7b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -90,7 +90,8 @@ GETTEXT_PACKAGE=librda
 AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE, "$GETTEXT_PACKAGE",
 		   [The gettext translation domain])
 AC_SUBST(GETTEXT_PACKAGE)
-AM_GLIB_GNU_GETTEXT
+AM_GNU_GETTEXT([external])
+AM_GNU_GETTEXT_VERSION([0.21])
 
 AC_CONFIG_FILES([
 Makefile