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-rw-r--r--kernel/reduction.ml1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/reduction.ml b/kernel/reduction.ml
index fc5e32cf5..10eccd059 100644
--- a/kernel/reduction.ml
+++ b/kernel/reduction.ml
@@ -15,6 +15,7 @@
(* Equal inductive types by Jacek Chrzaszcz as part of the module
system, Aug 2002 *)
+open Errors
open Util
open Names
open Term