diff --git a/primitives/duniter/src/lib.rs b/primitives/duniter/src/lib.rs
index 80d9d49e1b627992dcdd5c07274a3bd7e0687f8c..e077fa5d82441aafb81374c0da7f4d45909b2b3e 100644
--- a/primitives/duniter/src/lib.rs
+++ b/primitives/duniter/src/lib.rs
@@ -38,11 +38,11 @@ mod tests {
         assert!(validate_idty_name(b"B0b"));
         assert!(validate_idty_name(b"lorem_ipsum-dolor-sit_amet"));
         assert!(validate_idty_name(
-            b"1_______________________________________42"
+            b"1_______10________20________30________40_-"
         ));
         // --- disallow
         assert!(!validate_idty_name(
-            b"1________________________________________43"
+            b"1_______10________20________30________40_-_"
         ));
         assert!(!validate_idty_name(b"with space"));
         assert!(!validate_idty_name("non-ascii🌵".as_bytes()));