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-rw-r--r--compiler/GHC/Tc/Deriv.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/GHC/Tc/Deriv.hs b/compiler/GHC/Tc/Deriv.hs
index 9fe439e42e..02c885ce51 100644
--- a/compiler/GHC/Tc/Deriv.hs
+++ b/compiler/GHC/Tc/Deriv.hs
@@ -61,6 +61,7 @@ import GHC.Builtin.Names
import GHC.Types.SrcLoc
import GHC.Utils.Misc
import GHC.Utils.Outputable as Outputable
+import GHC.Utils.Panic
import GHC.Data.FastString
import GHC.Data.Bag
import GHC.Utils.FV as FV (fvVarList, unionFV, mkFVs)