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-rw-r--r--pretyping/typeclasses.ml1
1 files changed, 1 insertions, 0 deletions
diff --git a/pretyping/typeclasses.ml b/pretyping/typeclasses.ml
index d8a09f95c4..8fe06539c6 100644
--- a/pretyping/typeclasses.ml
+++ b/pretyping/typeclasses.ml
@@ -16,6 +16,7 @@ open Evd
open Environ
open Nametab
open Mod_subst
+open Errors
open Util
open Typeclasses_errors
open Libobject