diff --git a/engine/engine.c b/engine/engine.c
index d0c70d3..5c5a5a2 100644
--- a/engine/engine.c
+++ b/engine/engine.c
@@ -56,6 +56,8 @@
 
 #include "jobs/jobs.h"
 
+#include "mtproto/mtproto-config.h"
+
 #include "net/net-connections.h"
 #include "net/net-crypto-aes.h"
 #include "net/net-msg-buffers.h"