diff --git a/lib/config.dj b/lib/config.dj
index 479b070bae..01dd82ccf6 100644
--- a/lib/config.dj
+++ b/lib/config.dj
@@ -13,6 +13,7 @@
 #define HAVE_ALARM             1
 #define HAVE_ASSERT_T          1
 #define HAVE_ARPA_INET_H       1
+#define HAVE_BASENAME          1
 #define HAVE_CLOSESOCKET       1
 #define HAVE_FCNTL_H           1
 #define HAVE_GETHOSTBYADDR     1