diff --git a/redbot/launcher.py b/redbot/launcher.py
index de463016c..795491ee0 100644
--- a/redbot/launcher.py
+++ b/redbot/launcher.py
@@ -154,6 +154,11 @@ def cli_flag_getter():
         flags = []
         print("Ok, we will now walk through choosing cli flags")
         print("Would you like to specify an owner? (y/n)")
+        print(
+            "Please note that the owner is normally determined automatically from "
+            "the bot's token, so you should only use that if you want to specify a "
+            "user other than that one as the owner."
+        )
         choice = user_choice()
         if choice == "y":
             print("Enter the user id for the owner")
@@ -169,6 +174,10 @@ def cli_flag_getter():
             prefixes = user_choice().split()
             for p in prefixes:
                 flags.append("-p {}".format(p))
+        print("Would you like mentioning the bot to be a prefix? (y/n)")
+        choice = user_choice()
+        if choice == "y":
+            flags.append("--mentionable")
         print(
             "Would you like to disable console input? Please note that features "
             "requiring console interaction may fail to work (y/n)"