diff --git a/src/thue_morse3.v b/src/thue_morse3.v
index d398bb4..7e9ba36 100644
--- a/src/thue_morse3.v
+++ b/src/thue_morse3.v
@@ -966,7 +966,10 @@ Le lemme repeating_patterns se base sur les huit premiers termes de TM :
   apply Nat.lt_0_succ. apply Nat.le_refl.
   apply Nat.lt_le_incl. assumption. reflexivity. reflexivity.
   assumption. apply Nat.lt_0_succ.
-  
+  apply Nat.div_le_mono with (c := 8) in T. rewrite Nat.div_same in T.
+  rewrite Nat.le_succ_l in T. assumption. easy. easy.
+
+  (* on change de modulo ; on travaille sur 8k+6 maintenant *)