diff --git a/servant-js/src/Servant/JS/Internal.hs b/servant-js/src/Servant/JS/Internal.hs
index 3c817e1e..d123ef9a 100644
--- a/servant-js/src/Servant/JS/Internal.hs
+++ b/servant-js/src/Servant/JS/Internal.hs
@@ -23,7 +23,6 @@ module Servant.JS.Internal
   , HasForeignType(..)
   , GenerateList(..)
   , NoTypes
-  , HeaderArg
   , ArgType(..)
   , HeaderArg(..)
   , QueryArg(..)