1 files changed, 1 insertions, 0 deletions
diff --git a/strings.py b/strings.py
index c9cfb20..0a7efb9 100644
--- a/strings.py
+++ b/strings.py
@@ -11,5 +11,6 @@
 
 INVALID_COMMAND = "Invalid command. Available commands: /add"
 USER_NOT_PROVIDED = "User(s) is not provided"
+EXPECTED_ONE_USER = "Expected only one user"
 USER_ADDED = "User {user} has been added"
 USER_REMOVED = "User {user} has been removed"