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-rw-r--r--testsuite/tests/typecheck/should_compile/T13822.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/T13822.hs b/testsuite/tests/typecheck/should_compile/T13822.hs
index 5c4d51382f..cd5ff23478 100644
--- a/testsuite/tests/typecheck/should_compile/T13822.hs
+++ b/testsuite/tests/typecheck/should_compile/T13822.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE GADTs, TypeOperators, PolyKinds, DataKinds,
TypeFamilyDependencies, RankNTypes, LambdaCase, EmptyCase,
UndecidableInstances #-}