diff --git a/main/editline/readline.c b/main/editline/readline.c
index 3a62df6286..4729fa952f 100644
--- a/main/editline/readline.c
+++ b/main/editline/readline.c
@@ -36,6 +36,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include "asterisk.h"
 #include "config.h"
 #if !defined(lint) && !defined(SCCSID)
 __RCSID("$NetBSD: readline.c,v 1.21 2002/03/18 16:20:36 christos Exp $");