diff --git a/src/PostgREST/App.hs b/src/PostgREST/App.hs
index 7a4dfb982..d220d0266 100644
--- a/src/PostgREST/App.hs
+++ b/src/PostgREST/App.hs
@@ -610,9 +610,9 @@ contentTypeHeaders RequestContext{..} =
 -- than `*`
 binaryField :: Monad m => RequestContext -> ReadRequest -> Handler m (Maybe FieldName)
 binaryField RequestContext{..} readReq
-  | returnsScalar (iTarget ctxApiRequest) && iAcceptMediaType ctxApiRequest `elem` rawMediaTypes ctxConfig =
+  | returnsScalar (iTarget ctxApiRequest) && isRawMediaType =
       return $ Just "pgrst_scalar"
-  | iAcceptMediaType ctxApiRequest `elem` rawMediaTypes ctxConfig =
+  | isRawMediaType =
       let
         fldNames = fstFieldNames readReq
         fieldName = headMay fldNames
@@ -623,10 +623,8 @@ binaryField RequestContext{..} readReq
         throwError $ Error.BinaryFieldError (iAcceptMediaType ctxApiRequest)
   | otherwise =
       return Nothing
-
-rawMediaTypes :: AppConfig -> [MediaType]
-rawMediaTypes AppConfig{..} =
-  (MediaType.decodeMediaType <$> configRawMediaTypes) `union` [MTOctetStream, MTTextPlain, MTTextXML]
+  where
+    isRawMediaType = iAcceptMediaType ctxApiRequest `elem` configRawMediaTypes ctxConfig `union` [MTOctetStream, MTTextPlain, MTTextXML]
 
 profileHeader :: ApiRequest -> Maybe HTTP.Header
 profileHeader ApiRequest{..} =
diff --git a/src/PostgREST/Config.hs b/src/PostgREST/Config.hs
index d6e10a46c..f070575eb 100644
--- a/src/PostgREST/Config.hs
+++ b/src/PostgREST/Config.hs
@@ -57,6 +57,7 @@ import PostgREST.Config.Proxy            (Proxy (..),
                                           isMalformedProxyUri, toURI)
 import PostgREST.DbStructure.Identifiers (QualifiedIdentifier, dumpQi,
                                           toQi)
+import PostgREST.MediaType               (MediaType (..), toMime)
 
 import Protolude hiding (Proxy, toList)
 
@@ -88,7 +89,7 @@ data AppConfig = AppConfig
   , configLogLevel              :: LogLevel
   , configOpenApiMode           :: OpenAPIMode
   , configOpenApiServerProxyUri :: Maybe Text
-  , configRawMediaTypes         :: [BS.ByteString]
+  , configRawMediaTypes         :: [MediaType]
   , configServerHost            :: Text
   , configServerPort            :: Int
   , configServerUnixSocket      :: Maybe FilePath
@@ -143,7 +144,7 @@ toText conf =
       ,("log-level",                 q . dumpLogLevel . configLogLevel)
       ,("openapi-mode",              q . dumpOpenApiMode . configOpenApiMode)
       ,("openapi-server-proxy-uri",  q . fromMaybe mempty . configOpenApiServerProxyUri)
-      ,("raw-media-types",           q . T.decodeUtf8 . BS.intercalate "," . configRawMediaTypes)
+      ,("raw-media-types",           q . T.decodeUtf8 . BS.intercalate "," . fmap toMime . configRawMediaTypes)
       ,("server-host",               q . configServerHost)
       ,("server-port",                   show . configServerPort)
       ,("server-unix-socket",        q . maybe mempty T.pack . configServerUnixSocket)
@@ -238,7 +239,7 @@ parser optPath env dbSettings =
     <*> parseLogLevel "log-level"
     <*> parseOpenAPIMode "openapi-mode"
     <*> parseOpenAPIServerProxyURI "openapi-server-proxy-uri"
-    <*> (maybe [] (fmap encodeUtf8 . splitOnCommas) <$> optValue "raw-media-types")
+    <*> (maybe [] (fmap (MTOther . encodeUtf8) . splitOnCommas) <$> optValue "raw-media-types")
     <*> (fromMaybe "!4" <$> optString "server-host")
     <*> (fromMaybe 3000 <$> optInt "server-port")
     <*> (fmap T.unpack <$> optString "server-unix-socket")
diff --git a/src/PostgREST/Request/ApiRequest.hs b/src/PostgREST/Request/ApiRequest.hs
index 5e66cd4ed..08ad24e7a 100644
--- a/src/PostgREST/Request/ApiRequest.hs
+++ b/src/PostgREST/Request/ApiRequest.hs
@@ -420,7 +420,7 @@ findAcceptMediaType conf action path accepts =
 requestMediaTypes :: AppConfig -> Action -> Path -> [MediaType]
 requestMediaTypes conf action path =
   case action of
-    ActionRead _    -> defaultMediaTypes ++ rawMediaTypes conf
+    ActionRead _    -> defaultMediaTypes ++ rawMediaTypes
     ActionInvoke _  -> invokeMediaTypes
     ActionInspect _ -> [MTOpenAPI, MTApplicationJSON]
     ActionInfo      -> [MTTextCSV]
@@ -428,14 +428,11 @@ requestMediaTypes conf action path =
   where
     invokeMediaTypes =
       defaultMediaTypes
-        ++ rawMediaTypes conf
+        ++ rawMediaTypes
         ++ [MTOpenAPI | pIsRootSpec path]
     defaultMediaTypes =
       [MTApplicationJSON, MTSingularJSON, MTGeoJSON, MTTextCSV]
-
-rawMediaTypes :: AppConfig -> [MediaType]
-rawMediaTypes AppConfig{..} =
-  (MediaType.decodeMediaType <$> configRawMediaTypes) `union` [MTOctetStream, MTTextPlain, MTTextXML]
+    rawMediaTypes = configRawMediaTypes conf `union` [MTOctetStream, MTTextPlain, MTTextXML]
 
 {-|
   Search a pg proc by matching name and arguments keys to parameters. Since a function can be overloaded,
diff --git a/test/spec/SpecHelper.hs b/test/spec/SpecHelper.hs
index 787636963..4145f012e 100644
--- a/test/spec/SpecHelper.hs
+++ b/test/spec/SpecHelper.hs
@@ -26,6 +26,7 @@ import PostgREST.Config                  (AppConfig (..),
                                           OpenAPIMode (..),
                                           parseSecret)
 import PostgREST.DbStructure.Identifiers (QualifiedIdentifier (..))
+import PostgREST.MediaType               (MediaType (..))
 import Protolude                         hiding (toS)
 import Protolude.Conv                    (toS)
 
@@ -176,7 +177,7 @@ testCfgRootSpec :: AppConfig
 testCfgRootSpec = baseCfg { configDbRootSpec = Just $ QualifiedIdentifier mempty "root"}
 
 testCfgHtmlRawOutput :: AppConfig
-testCfgHtmlRawOutput = baseCfg { configRawMediaTypes = ["text/html"] }
+testCfgHtmlRawOutput = baseCfg { configRawMediaTypes = [MTOther "text/html"] }
 
 testCfgResponseHeaders :: AppConfig
 testCfgResponseHeaders = baseCfg { configDbPreRequest = Just $ QualifiedIdentifier mempty "custom_headers" }