diff --git a/Course3/Lab4/validations.py b/Course3/Lab4/validations.py
index b18de65a2e..79372f2c19 100644
--- a/Course3/Lab4/validations.py
+++ b/Course3/Lab4/validations.py
@@ -3,6 +3,10 @@
 import re
 
 def validate_user(username, minlen):
+
+    if username[0] in ['_', '.']:
+        return False
+
     """Checks if the received username matches the required conditions."""
     if type(username) != str:
         raise TypeError("username must be a string")
@@ -19,6 +23,11 @@ def validate_user(username, minlen):
     if username[0].isnumeric():
         return False
     return True
+	
+print(validate_user("blue.kale", 3)) # True
 
+print(validate_user(".blue.kale", 3)) # Currently True, should be False
 
+print(validate_user("red_quinoa", 4)) # True
 
+print(validate_user("_red_quinoa", 4)) # Currently True, should be False