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-rw-r--r--compiler/coreSyn/CoreLint.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/coreSyn/CoreLint.hs b/compiler/coreSyn/CoreLint.hs
index 6f199ea4f6..1d4d28c151 100644
--- a/compiler/coreSyn/CoreLint.hs
+++ b/compiler/coreSyn/CoreLint.hs
@@ -1688,7 +1688,7 @@ addInScopeVar var m
extendSubstL :: TyVar -> Type -> LintM a -> LintM a
extendSubstL tv ty m
= LintM $ \ env errs ->
- unLintM m (env { le_subst = Type.extendTCvSubst (le_subst env) tv ty }) errs
+ unLintM m (env { le_subst = Type.extendTvSubst (le_subst env) tv ty }) errs
updateTCvSubst :: TCvSubst -> LintM a -> LintM a
updateTCvSubst subst' m