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-rw-r--r--kernel/esubst.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/esubst.ml b/kernel/esubst.ml
index 319f95c61..998bba492 100644
--- a/kernel/esubst.ml
+++ b/kernel/esubst.ml
@@ -49,7 +49,7 @@ let rec reloc_rel n = function
let rec is_lift_id = function
| ELID -> true
- | ELSHFT(e,n) -> Int.equal n 0 & is_lift_id e
+ | ELSHFT(e,n) -> Int.equal n 0 && is_lift_id e
| ELLFT (_,e) -> is_lift_id e
(*********************)