diff --git a/config-post.h b/config-post.h
index 24117bbbd4..05672121f0 100644
--- a/config-post.h
+++ b/config-post.h
@@ -44,8 +44,6 @@
 # undef WITH_SSH2
 # undef WITH_SYSTEMD_DAEMON
 # undef WITH_VIRTUALPORT
-# undef WITH_YAJL
-# undef WITH_YAJL2
 #endif
 
 /*