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diff --git a/ghc/compiler/tests/typecheck/should_succeed/tc053.hs b/ghc/compiler/tests/typecheck/should_succeed/tc053.hs
new file mode 100644
index 0000000..865211d
--- /dev/null
+++ b/ghc/compiler/tests/typecheck/should_succeed/tc053.hs
@@ -0,0 +1,12 @@
+module ShouldSucceed where
+
+class Eq' a where
+ deq :: a -> a -> Bool
+
+instance Eq' Int where
+ deq x y = True
+
+instance (Eq' a) => Eq' [a] where
+ deq (a:as) (b:bs) = if (deq a b) then (deq as bs) else False
+
+f x = deq x [1]