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diff --git a/testsuite/tests/typecheck/should_compile/tc201.hs b/testsuite/tests/typecheck/should_compile/tc201.hs
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+{-# LANGUAGE MultiParamTypeClasses, FunctionalDependencies,
+             ExistentialQuantification, FlexibleContexts #-}
+
+{-	Email 30 Jan 2006
+
+> the attached program compiles under GHC, but not with Hugs. as far as
+> i see, Hugs don't use dependencies in class headers to figure out that
+> there is only one "vMkIOError" that can be called in the last
+> definition
+
+OK, I think it's a bug (though the example is bizarre).  Sadly Hugs's
+support for FDs is rough around the edges (and unlikely to improve
+soon).
+
+-}
+
+module ShoudlCompile where
+
+	class (Monad m) => Stream m h | h->m where
+		vMkIOError :: h -> Int
+
+	data BinHandle = forall h . Stream IO h => BinH h
+
+	instance Stream IO BinHandle where
+		vMkIOError (BinH h) = vMkIOError h