diff --git a/Cabal/Distribution/Simple/GHC.hs b/Cabal/Distribution/Simple/GHC.hs
index 5e2a1310f62..56a33101d4e 100644
--- a/Cabal/Distribution/Simple/GHC.hs
+++ b/Cabal/Distribution/Simple/GHC.hs
@@ -144,16 +144,21 @@ configure verbosity hcPath hcPkgPath conf0 = do
 
   ghcInfo <- Internal.getGhcInfo verbosity implInfo ghcProg
   let ghcInfoMap = M.fromList ghcInfo
+      extensions = -- workaround https://ghc.haskell.org/ticket/11214
+                   filterExt JavaScriptFFI $
+                   -- see 'filterExtTH' comment below
+                   filterExtTH $ extensions0
 
       -- starting with GHC 8.0, `TemplateHaskell` will be omitted from
       -- `--supported-extensions` when it's not available.
       -- for older GHCs we can use the "Have interpreter" property to
       -- filter out `TemplateHaskell`
-      extensions | ghcVersion < Version [8] []
-                 , Just "NO" <- M.lookup "Have interpreter" ghcInfoMap
-                   = filter ((/= EnableExtension TemplateHaskell) . fst)
-                     extensions0
-                 | otherwise = extensions0
+      filterExtTH | ghcVersion < Version [8] []
+                   , Just "NO" <- M.lookup "Have interpreter" ghcInfoMap
+                   = filterExt TemplateHaskell
+                  | otherwise = id
+
+      filterExt ext = filter ((/= EnableExtension ext) . fst)
 
   let comp = Compiler {
         compilerId         = CompilerId GHC ghcVersion,