diff --git a/configure.in b/configure.in
index c67e8e696..ec246b1e0 100644
--- a/configure.in
+++ b/configure.in
@@ -2344,6 +2344,7 @@ AH_TEMPLATE(HAVE_LBER_H, [Define to 1 if your LDAP needs <lber.h>. (OpenLDAP doe
 AH_TEMPLATE(HAVE_LDAP, [Define to 1 if you use LDAP for sudoers.])
 AH_TEMPLATE(HAVE_OPIE, [Define to 1 if you use NRL OPIE.])
 AH_TEMPLATE(HAVE_PAM, [Define to 1 if you use PAM authentication.])
+AH_TEMPLATE(HAVE_PROJECT_H, [Define to 1 if you have the <project.h> header file.])
 AH_TEMPLATE(HAVE_SECURID, [Define to 1 if you use SecurID for authentication.])
 AH_TEMPLATE(HAVE_SIA, [Define to 1 if you use SIA authentication.])
 AH_TEMPLATE(HAVE_SIGACTION_T, [Define to 1 if <signal.h> has the sigaction_t typedef.])