diff --git a/latex/yssymbols.sty b/latex/yssymbols.sty
index 178be40..bdf2540 100644
--- a/latex/yssymbols.sty
+++ b/latex/yssymbols.sty
@@ -69,5 +69,8 @@
 \DeclareMathOperator*{\petito}{o}
 \DeclareMathOperator*{\grando}{O}
 
+\RequirePackage{faktor}
+\let\ensquot\faktor
+
 \def\ssi{\@ifnextchar i{si et seulement s'}{si et seulement si\xspace}}
 \endinput
\ No newline at end of file