diff --git a/src/autoreplace_type.h b/src/autoreplace_type.h
new file mode 100644
--- /dev/null
+++ b/src/autoreplace_type.h
@@ -0,0 +1,15 @@
+/* $Id$ */
+
+/** @file autoreplace_type.h Types related to autoreplacing. */
+
+#ifndef AUTOREPLACE_TYPE_H
+#define AUTOREPLACE_TYPE_H
+
+struct EngineRenew;
+
+/**
+ * A list to group EngineRenew directives together (such as per-player).
+ */
+typedef EngineRenew* EngineRenewList;
+
+#endif /* AUTOREPLACE_TYPE_H */