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-rw-r--r--plugins/extraction/haskell.ml4
1 files changed, 2 insertions, 2 deletions
diff --git a/plugins/extraction/haskell.ml b/plugins/extraction/haskell.ml
index 0692c88cd1..83bb2e135e 100644
--- a/plugins/extraction/haskell.ml
+++ b/plugins/extraction/haskell.ml
@@ -21,8 +21,8 @@ open Common
(*s Haskell renaming issues. *)
-let pr_lower_id id = str (String.uncapitalize (Id.to_string id))
-let pr_upper_id id = str (String.capitalize (Id.to_string id))
+let pr_lower_id id = str (String.uncapitalize_ascii (Id.to_string id))
+let pr_upper_id id = str (String.capitalize_ascii (Id.to_string id))
let keywords =
List.fold_right (fun s -> Id.Set.add (Id.of_string s))