diff --git a/config.h.in b/config.h.in
index 7d5216d..afe71b3 100644
--- a/config.h.in
+++ b/config.h.in
@@ -30,6 +30,9 @@
 /* 1 if have memset in memory.h. */
 #undef HAVE_MEMSET
 
+/* 1 if have OSX SecKeychain. */
+#undef HAVE_OSX_SECKEYCHAIN
+
 /* Have the SQLITE3 library */
 #undef HAVE_SQLITE3