diff --git a/scripts/o365_util.py b/scripts/o365_util.py
index c4952ef..081929b 100644
--- a/scripts/o365_util.py
+++ b/scripts/o365_util.py
@@ -177,7 +177,7 @@ class O365_User:
                     if isinstance(interval, tuple):
                         print("3")
                         if not len(interval) == 2:
-                            raise ValueError("The interval has a bad format.")
+                            raise ValueError("The interval has a not good format.")
                         (min_interval, max_interval) = interval
                         random_interval = random.randint(min_interval if min_interval <= max_interval else max_interval,
                                                          max_interval if min_interval <= max_interval else min_interval)