diff --git a/src/engine.cpp b/src/engine.cpp
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -25,6 +25,7 @@
 #include "autoreplace_base.h"
 #include "autoreplace_gui.h"
 #include "string_func.h"
+#include "settings_type.h"
 
 #include "table/strings.h"
 #include "table/engines.h"