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-rw-r--r--compiler/prelude/PrelNames.lhs3
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/prelude/PrelNames.lhs b/compiler/prelude/PrelNames.lhs
index bd59a01936..812a0ff70b 100644
--- a/compiler/prelude/PrelNames.lhs
+++ b/compiler/prelude/PrelNames.lhs
@@ -1591,7 +1591,8 @@ kindKeys = [ liftedTypeKindTyConKey
, openTypeKindTyConKey
, unliftedTypeKindTyConKey
, ubxTupleKindTyConKey
- , argTypeKindTyConKey ]
+ , argTypeKindTyConKey
+ , constraintKindTyConKey ]
\end{code}