diff --git a/leak-utils/parquet/format.go b/leak-utils/parquet/format.go
index a386819..400b757 100644
--- a/leak-utils/parquet/format.go
+++ b/leak-utils/parquet/format.go
@@ -14,6 +14,11 @@ func formatColumnName(columnName string) string {
 	columnName = strings.ReplaceAll(columnName, " ", "_")
 	columnName = strings.ReplaceAll(columnName, "-", "_")
 	columnName = strings.ReplaceAll(columnName, ".", "_")
+	columnName = strings.ReplaceAll(columnName, "é", "e")
+	columnName = strings.ReplaceAll(columnName, "è", "e")
+	columnName = strings.ReplaceAll(columnName, "à", "a")
+	columnName = strings.ReplaceAll(columnName, "ù", "u")
+	columnName = strings.ReplaceAll(columnName, "ç", "c")
 	// Only keep a-z, 0-9 and _
 	var formatted strings.Builder
 	for _, r := range columnName {