diff --git a/src/Database/Esqueleto/Internal/Internal.hs b/src/Database/Esqueleto/Internal/Internal.hs
index 151af41..323c91d 100644
--- a/src/Database/Esqueleto/Internal/Internal.hs
+++ b/src/Database/Esqueleto/Internal/Internal.hs
@@ -730,8 +730,9 @@ case_ = unsafeSqlCase
 -- Bar
 --   barNum Int
 -- Foo
---   Id BarId
+--   bar BarId
 --   fooNum Int
+--   Primary bar
 -- @
 --
 -- For this example, declare: