diff --git a/collects/typed-scheme/scribblings/ts-reference.scrbl b/collects/typed-scheme/scribblings/ts-reference.scrbl
index 802a614a..de953b57 100644
--- a/collects/typed-scheme/scribblings/ts-reference.scrbl
+++ b/collects/typed-scheme/scribblings/ts-reference.scrbl
@@ -21,6 +21,7 @@
 @subsubsub*section{Base Types}
 @deftogether[(
 @defidform[Number]
+@defidform[Complex]
 @defidform[Real]
 @defidform[Integer]
 @defidform[Natural]