diff --git a/internal/collections/domain/collection/subject.go b/internal/collections/domain/collection/subject.go
index 3534aca9..f196e687 100644
--- a/internal/collections/domain/collection/subject.go
+++ b/internal/collections/domain/collection/subject.go
@@ -119,7 +119,7 @@ func (s *Subject) UpdateComment(comment string) error {
 		return gerr.ErrInvisibleChar
 	}
 
-	s.comment = norm.NFKC.String(comment)
+	s.comment = norm.NFC.String(comment)
 
 	return nil
 }
diff --git a/internal/subject/mysql_repository_test.go b/internal/subject/mysql_repository_test.go
index c6a767a9..93c53159 100644
--- a/internal/subject/mysql_repository_test.go
+++ b/internal/subject/mysql_repository_test.go
@@ -73,7 +73,7 @@ func TestBrowse(t *testing.T) {
 	}
 	s, err := repo.Browse(context.Background(), filter, 30, 0)
 	require.NoError(t, err)
-	require.Equal(t, 12, len(s))
+	require.Equal(t, 17, len(s))
 
 	filter = subject.BrowseFilter{
 		Type:     1,
diff --git a/web/req/collection.go b/web/req/collection.go
index f0e5d6aa..19503cbf 100644
--- a/web/req/collection.go
+++ b/web/req/collection.go
@@ -70,7 +70,7 @@ func (v *SubjectEpisodeCollectionPatch) Validate() error {
 	}
 
 	if v.Comment.Set {
-		v.Comment.Value = norm.NFKC.String(v.Comment.Value)
+		v.Comment.Value = norm.NFC.String(v.Comment.Value)
 		v.Comment.Value = strings.TrimSpace(v.Comment.Value)
 		if !dam.AllPrintableChar(v.Comment.Value) {
 			return res.BadRequest("invisible character are included in comment")