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-rw-r--r--pretyping/cases.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/pretyping/cases.ml b/pretyping/cases.ml
index 331cd01231..304ffc7662 100644
--- a/pretyping/cases.ml
+++ b/pretyping/cases.ml
@@ -595,7 +595,7 @@ let regeneralize_index_tomatch n =
genrec 0
let rec replace_term n c k t =
- if t = mkRel (n+k) then lift k c
+ if isRel t && destRel t = n+k then lift k c
else map_constr_with_binders succ (replace_term n c) k t
let length_of_tomatch_type_sign (dep,_) = function