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-rw-r--r--plugins/ring/ring.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/plugins/ring/ring.ml b/plugins/ring/ring.ml
index 89309e3232..6dd2a0c6e8 100644
--- a/plugins/ring/ring.ml
+++ b/plugins/ring/ring.ml
@@ -166,7 +166,7 @@ type theory =
(* Theories are stored in a table which is synchronised with the Reset
mechanism. *)
-module Cmap = Map.Make(struct type t = constr let compare = compare end)
+module Cmap = Map.Make(struct type t = constr let compare = constr_ord end)
let theories_map = ref Cmap.empty