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-rw-r--r--plugins/firstorder/unify.ml4
1 files changed, 2 insertions, 2 deletions
diff --git a/plugins/firstorder/unify.ml b/plugins/firstorder/unify.ml
index 06f56d06e..d63fe9d79 100644
--- a/plugins/firstorder/unify.ml
+++ b/plugins/firstorder/unify.ml
@@ -56,12 +56,12 @@ let unif evd t1 t2=
| Meta i,_ ->
let t=subst_meta !sigma nt2 in
if Int.Set.is_empty (free_rels evd t) &&
- not (dependent evd (EConstr.mkMeta i) t) then
+ not (occur_metavariable evd i t) then
bind i t else raise (UFAIL(nt1,nt2))
| _,Meta i ->
let t=subst_meta !sigma nt1 in
if Int.Set.is_empty (free_rels evd t) &&
- not (dependent evd (EConstr.mkMeta i) t) then
+ not (occur_metavariable evd i t) then
bind i t else raise (UFAIL(nt1,nt2))
| Cast(_,_,_),_->Queue.add (strip_outer_cast evd nt1,nt2) bige
| _,Cast(_,_,_)->Queue.add (nt1,strip_outer_cast evd nt2) bige