diff --git a/FAQ.md b/FAQ.md
index 293f99793c..e246f2515b 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -3665,6 +3665,8 @@ provided that auto classification is enabled for the folder:
 * *Minimum class probability*: a message will only be moved when the confidence it belongs in a folder is greater than this value (default 15 %)
 * *Minimum class difference*: a message will only be moved when the difference in confidence between one class and the next most likely class is greater than this value (default 50 %)
 
+If all previously classified messages were the same and the message being evaluated is also the same, the confidence would be 100%.
+
 Both conditions must be satisfied before a message will be moved.
 
 Considering the default option values: