diff --git a/repochecker/grammalecte/flags.go b/repochecker/grammalecte/flags.go
index 20c6de38..c2b12c40 100644
--- a/repochecker/grammalecte/flags.go
+++ b/repochecker/grammalecte/flags.go
@@ -6,12 +6,13 @@ import (
 
 	"srs.epita.fr/fic-server/admin/sync"
 	"srs.epita.fr/fic-server/libfic"
+	lib "srs.epita.fr/fic-server/repochecker/grammalecte/lib"
 )
 
 func GrammalecteCheckKeyFlag(flag *fic.FlagKey, raw string, exceptions *sync.CheckExceptions) (errs []error) {
 	label, _, _, _ := flag.AnalyzeFlagLabel()
 	for _, err := range grammalecte("label ", label, exceptions, &CommonOpts) {
-		if e, ok := err.(GrammarError); ok && e.RuleId == "poncfin_règle1" {
+		if e, ok := err.(lib.GrammarError); ok && e.RuleId == "poncfin_règle1" {
 			continue
 		}
 
@@ -56,7 +57,7 @@ func GrammalecteCheckMDText(str string, exceptions *sync.CheckExceptions) (errs
 	return
 }
 
-func GrammalecteCheckGrammar(data interface{}, exceptions *sync.CheckExceptions) (errs []error) {
+func GrammalecteCheckGrammar(data interface{}, exceptions *sync.CheckExceptions) []error {
 	if s, ok := data.(string); ok {
 		return grammalecte("", s, exceptions, &CommonOpts)
 	} else {
diff --git a/repochecker/grammalecte/grammalecte.go b/repochecker/grammalecte/grammalecte.go
index a9e0606f..596708ff 100644
--- a/repochecker/grammalecte/grammalecte.go
+++ b/repochecker/grammalecte/grammalecte.go
@@ -10,6 +10,7 @@ import (
 	"strings"
 
 	"srs.epita.fr/fic-server/admin/sync"
+	lib "srs.epita.fr/fic-server/repochecker/grammalecte/lib"
 )
 
 type GrammalecteOptions struct {
@@ -169,7 +170,7 @@ func grammalecte(name string, text string, exceptions *sync.CheckExceptions, opt
 			}
 
 			suggestions, _ := suggest(serror.Value)
-			errs = append(errs, SpellingError{
+			errs = append(errs, lib.SpellingError{
 				Prefix:      name,
 				Source:      data.Text,
 				NSource:     data.Paragraph,
@@ -190,7 +191,7 @@ func grammalecte(name string, text string, exceptions *sync.CheckExceptions, opt
 				continue
 			}
 
-			errs = append(errs, GrammarError{
+			errs = append(errs, lib.GrammarError{
 				Prefix:      name,
 				Source:      data.Text,
 				NSource:     data.Paragraph,
diff --git a/repochecker/grammalecte/errors.go b/repochecker/grammalecte/lib/errors.go
similarity index 98%
rename from repochecker/grammalecte/errors.go
rename to repochecker/grammalecte/lib/errors.go
index bb4db743..8b5762ab 100644
--- a/repochecker/grammalecte/errors.go
+++ b/repochecker/grammalecte/lib/errors.go
@@ -1,4 +1,4 @@
-package main
+package grammalecte
 
 import (
 	"bytes"