diff --git a/utils/latex-preprocessing b/utils/latex-preprocessing
index a5c0ac94..4d6dfd70 100755
--- a/utils/latex-preprocessing
+++ b/utils/latex-preprocessing
@@ -28,6 +28,7 @@ sed -i "s/b\\]/\\&\\]/g" $i;
 sed -i "s/032010}/X32010}/g" $i;
 #La
 sed -i "s/002220}/X02220}/g" $i;
+sed -i "s/002020}/X02020}/g" $i;
 #Lam
 sed -i "s/002210}/X02210}/g" $i;
 #Ré