diff --git a/src/depot_type.h b/src/depot_type.h
new file mode 100644
--- /dev/null
+++ b/src/depot_type.h
@@ -0,0 +1,11 @@
+/* $Id$ */
+
+/** @file depot_type.h Header files for depots (not hangars) */
+
+#ifndef DEPOT_TYPE_H
+#define DEPOT_TYPE_H
+
+typedef uint16 DepotID;
+struct Depot;
+
+#endif /* DEPOT_TYPE_H */