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diff --git a/matita/matita/contribs/lambdadelta/basic_2/notation/relations/lrsubeqv_5.ma b/matita/matita/contribs/lambdadelta/basic_2/notation/relations/lrsubeqv_5.ma
index a617f7923..c93efe31e 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/notation/relations/lrsubeqv_5.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/notation/relations/lrsubeqv_5.ma
@@ -14,6 +14,6 @@
 
 (* NOTATION FOR THE FORMAL SYSTEM λδ ****************************************)
 
-notation "hvbox( G ⊢ break term 46 L1 ¡ ⊑ break [ term 46 h, break term 46 g ] break term 46 L2 )"
+notation "hvbox( G ⊢ break term 46 L1 ⫃![ break term 46 h, break term 46 a ] break term 46 L2 )"
    non associative with precedence 45
-   for @{ 'LRSubEqV $h $g $G $L1 $L2 }.
+   for @{ 'LRSubEqV $h $a $G $L1 $L2 }.