diff --git a/songs/Boby_Lapointe/La_maman_des_poissons.sg b/songs/Boby_Lapointe/La_maman_des_poissons.sg
index c69e1511..a9614532 100644
--- a/songs/Boby_Lapointe/La_maman_des_poissons.sg
+++ b/songs/Boby_Lapointe/La_maman_des_poissons.sg
@@ -30,7 +30,7 @@ Et quand ça a dîné ça r'\[Sol]dîne.
 
 \beginchorus
 La ma\[Sol]man des poissons
-Elle a l'\[Ré7]oeil tout rond
+Elle a l'\[Ré7]œil tout rond
 On ne la voit jamais froncer \[Sol]les sourcils 
 Ses pe\[Sol]tits l'aiment bien, elle est \[Ré7]bien gentille
 Et moi je l'aime bien avec du ci\[Sol]tron.
diff --git a/songs/Francis_Cabrel/Petite_Marie.sg b/songs/Francis_Cabrel/Petite_Marie.sg
index 9c243f95..7d01a95d 100644
--- a/songs/Francis_Cabrel/Petite_Marie.sg
+++ b/songs/Francis_Cabrel/Petite_Marie.sg
@@ -3,7 +3,7 @@
 
 \cover
 \gtab{Mim}{022000}
-\gtab{La7}{002020}
+\gtab{La7}{X02020}
 \gtab{Sim}{2:X02210}
 \gtab{Fa#}{2:022100}
 \gtab{Sol}{320003}
diff --git a/songs/Georges_Brassens/Les_copains_d_abord.sg b/songs/Georges_Brassens/Les_copains_d_abord.sg
index 383c383a..410b671c 100644
--- a/songs/Georges_Brassens/Les_copains_d_abord.sg
+++ b/songs/Georges_Brassens/Les_copains_d_abord.sg
@@ -7,7 +7,7 @@
 \gtab{Sol}{320003}
 \gtab{Fa#}{2:022100}
 \gtab{Sim}{2:X02210}
-\gtab{La7}{002020}
+\gtab{La7}{X02020}
 
 \beginverse
 Non ce n'é\[Ré]tait pas le radeau
diff --git a/songs/Graeme_Allwright/Ca_je_l_ai_jamais_vu.sg b/songs/Graeme_Allwright/Ca_je_l_ai_jamais_vu.sg
index a0ba66a6..642f04e7 100644
--- a/songs/Graeme_Allwright/Ca_je_l_ai_jamais_vu.sg
+++ b/songs/Graeme_Allwright/Ca_je_l_ai_jamais_vu.sg
@@ -5,7 +5,7 @@
 \cover
 \gtab{Ré}{XX0232}
 \gtab{Sol}{320003}
-\gtab{La7}{002020}
+\gtab{La7}{X02020}
 \gtab{Mi7}{020100}
 \gtab{La}{X02220}
 
diff --git a/songs/Graeme_Allwright/Petit_garcon.sg b/songs/Graeme_Allwright/Petit_garcon.sg
index 9d990896..902e86b3 100644
--- a/songs/Graeme_Allwright/Petit_garcon.sg
+++ b/songs/Graeme_Allwright/Petit_garcon.sg
@@ -3,7 +3,7 @@
 
 \cover
 \gtab{Ré}{XX0232}
-\gtab{La7}{002020}
+\gtab{La7}{X02020}
 \gtab{Sol}{320003}
 \gtab{La}{X02220}
 \gtab{Sim}{2:X02210}
diff --git a/songs/Jacques_Brel/Vesoul.sg b/songs/Jacques_Brel/Vesoul.sg
index 738bc5ec..1c210a9c 100644
--- a/songs/Jacques_Brel/Vesoul.sg
+++ b/songs/Jacques_Brel/Vesoul.sg
@@ -5,7 +5,7 @@
 \cover
 \gtab{Lam}{X02210}
 \gtab{Mi7}{020100}
-\gtab{La7}{002020}
+\gtab{La7}{X02020}
 \gtab{Rém}{XX0231}
 \gtab{Sol7}{320001}
 \gtab{Do}{X32010}
diff --git a/songs/Joe_Dassin/Le_chemin_de_Papa.sg b/songs/Joe_Dassin/Le_chemin_de_Papa.sg
index c777d55c..e654f520 100644
--- a/songs/Joe_Dassin/Le_chemin_de_Papa.sg
+++ b/songs/Joe_Dassin/Le_chemin_de_Papa.sg
@@ -5,7 +5,7 @@
 \cover
 \gtab{Lam}{X02210}
 \gtab{Mi7}{020100}
-\gtab{La7}{002020}
+\gtab{La7}{X02020}
 \gtab{Rém}{XX0231}
 \gtab{Sol}{320003}
 \gtab{Do}{X32010}
diff --git a/songs/Karpatt/Des_gnons_pour_des_pelles.sg b/songs/Karpatt/Des_gnons_pour_des_pelles.sg
index 10c1b44a..256d57e7 100644
--- a/songs/Karpatt/Des_gnons_pour_des_pelles.sg
+++ b/songs/Karpatt/Des_gnons_pour_des_pelles.sg
@@ -5,7 +5,7 @@
 \cover
 \gtab{Fa#}{2:022100}
 \gtab{Sim}{2:X02210}
-\gtab{La}{5:X02210}
+\gtab{La}{5:X22100}
 \gtab{Ré}{5:X02220}
 \gtab{Mim}{7:X02210}
 
diff --git a/songs/Karpatt/Melisande.sg b/songs/Karpatt/Melisande.sg
index 9ef6e0a0..0efa5799 100644
--- a/songs/Karpatt/Melisande.sg
+++ b/songs/Karpatt/Melisande.sg
@@ -5,7 +5,7 @@
 \cover
 \gtab{Lam}{X02210}
 \gtab{Mi7}{020100}
-\gtab{La7}{002020}
+\gtab{La7}{X02020}
 \gtab{Rém}{XX0231}
 \gtab{Ré7}{XX0212}
 \gtab{Sol7}{3:020100}
diff --git a/songs/Oldelaf_et_Monsieur_D/J_veux_etre_muscle.sg b/songs/Oldelaf_et_Monsieur_D/J_veux_etre_muscle.sg
index 036f00f4..9b896da3 100644
--- a/songs/Oldelaf_et_Monsieur_D/J_veux_etre_muscle.sg
+++ b/songs/Oldelaf_et_Monsieur_D/J_veux_etre_muscle.sg
@@ -7,10 +7,10 @@
 \gtab{Solm}{{10}:X02210}
 \gtab{Fa}{8:X02220}
 \gtab{Si&}{6:022100}
-\gtab{Ré7}{5:002020}
+\gtab{Ré7}{5:X02020}
 
 %tabs pour le refrain
-\gtab{Si7}{2:002020}
+\gtab{Si7}{2:X02020}
 \gtab{Solm}{3:022000}
 \gtab{Fa}{1:022100}
 \gtab{Si&}{1:X02220}
diff --git a/songs/Oldelaf_et_Monsieur_D/Raoul_le_pitbull.sg b/songs/Oldelaf_et_Monsieur_D/Raoul_le_pitbull.sg
index 80f7be85..9e30788a 100644
--- a/songs/Oldelaf_et_Monsieur_D/Raoul_le_pitbull.sg
+++ b/songs/Oldelaf_et_Monsieur_D/Raoul_le_pitbull.sg
@@ -7,7 +7,7 @@
 \gtab{Lam}{5:022000}
 \gtab{Si7}{7:020100}
 \gtab{Fa#7}{6:X3231X}
-\gtab{Ré7}{5:002020}
+\gtab{Ré7}{5:X02020}
 \gtab{Sol}{3:022100}
 \gtab{Mi7}{5:X2120X}
 \gtab{Do}{8:022100}
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