diff --git a/tile/tile.h b/tile/tile.h
index 18271fa..f0787ca 100644
--- a/tile/tile.h
+++ b/tile/tile.h
@@ -17,6 +17,7 @@
 #include "tile/base/encoding.h"
 #include "tile/base/enum.h"
 #include "tile/base/erased_ptr.h"
+#include "tile/base/expected.h"
 #include "tile/base/exposed_var.h"
 #include "tile/base/future.h"
 #include "tile/base/handle.h"