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-rw-r--r--compiler/GHC/Tc/Deriv/Generics.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/Tc/Deriv/Generics.hs b/compiler/GHC/Tc/Deriv/Generics.hs
index 2b1bbb2bf2..221fe49762 100644
--- a/compiler/GHC/Tc/Deriv/Generics.hs
+++ b/compiler/GHC/Tc/Deriv/Generics.hs
@@ -686,7 +686,7 @@ tc_mkRepTy gk get_fixity dit@(DerivInstTys{ dit_rep_tc = tycon
pDStrness = mkTyConTy $ case ib of
HsLazy -> pDLzy
- HsStrict -> pDStr
+ HsStrict _ -> pDStr
HsUnpack{} -> pDUpk
return (mkD tycon)