diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2263072d..a0c1330b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 * Render endpoints in a canonical order (https://github.com/haskell-servant/servant-docs/pull/15)
 * Remove ToJSON superclass from ToSample
 * Split out Internal module
+* `Canonicalize` API types before generating the docs for them
 
 0.3
 ---
diff --git a/example/greet.hs b/example/greet.hs
index e5734472..fc649607 100644
--- a/example/greet.hs
+++ b/example/greet.hs
@@ -27,7 +27,7 @@ instance ToJSON Greet
 
 -- | We can also implement 'MimeRender' for additional formats like 'PlainText'.
 instance MimeRender PlainText Greet where
-    toByteString Proxy (Greet s) = "\"" <> cs s <> "\""
+    mimeRender Proxy (Greet s) = "\"" <> cs s <> "\""
 
 -- We add some useful annotations to our captures,
 -- query parameters and request body to make the docs
diff --git a/src/Servant/Docs/Internal.hs b/src/Servant/Docs/Internal.hs
index 786157cd..408e1cdb 100644
--- a/src/Servant/Docs/Internal.hs
+++ b/src/Servant/Docs/Internal.hs
@@ -273,8 +273,8 @@ makeLenses ''Action
 
 -- | Generate the docs for a given API that implements 'HasDocs'. This is the
 -- default way to create documentation.
-docs :: HasDocs layout => Proxy layout -> API
-docs p = docsFor p (defEndpoint, defAction)
+docs :: HasDocs (Canonicalize layout) => Proxy layout -> API
+docs p = docsFor (canonicalize p) (defEndpoint, defAction)
 
 -- | Closed type family, check if endpoint is exactly within API.
 
@@ -318,7 +318,7 @@ extraInfo p action =
 -- 'extraInfo'.
 --
 -- If you only want to add an introduction, use 'docsWithIntros'.
-docsWith :: HasDocs layout
+docsWith :: HasDocs (Canonicalize layout)
          => [DocIntro]
          -> ExtraInfo layout
          -> Proxy layout
@@ -330,7 +330,7 @@ docsWith intros (ExtraInfo endpoints) p =
 
 -- | Generate the docs for a given API that implements 'HasDocs' with with any
 -- number of introduction(s)
-docsWithIntros :: HasDocs layout => [DocIntro] -> Proxy layout -> API
+docsWithIntros :: HasDocs (Canonicalize layout) => [DocIntro] -> Proxy layout -> API
 docsWithIntros intros = docsWith intros mempty
 
 -- | The class that abstracts away the impact of API combinators
diff --git a/test/Servant/DocsSpec.hs b/test/Servant/DocsSpec.hs
index bc8b75ab..803823ba 100644
--- a/test/Servant/DocsSpec.hs
+++ b/test/Servant/DocsSpec.hs
@@ -56,7 +56,7 @@ instance ToSample Int where
   toSample = Just 17
 
 instance MimeRender PlainText Int where
-  toByteString _ = cs . show
+  mimeRender _ = cs . show
 
 
 type TestApi1 = Get '[JSON, PlainText] Int