diff --git a/Course3/Lab4/validations.py b/Course3/Lab4/validations.py
index b18de65a2e..1bdc48e03e 100644
--- a/Course3/Lab4/validations.py
+++ b/Course3/Lab4/validations.py
@@ -3,22 +3,24 @@
 import re
 
 def validate_user(username, minlen):
-    """Checks if the received username matches the required conditions."""
     if type(username) != str:
         raise TypeError("username must be a string")
     if minlen < 1:
         raise ValueError("minlen must be at least 1")
     
-    # Usernames can't be shorter than minlen
     if len(username) < minlen:
         return False
-    # Usernames can only use letters, numbers, dots and underscores
-    if not re.match('^[a-z0-9._]*$', username):
-        return False
-    # Usernames can't begin with a number
-    if username[0].isnumeric():
+    
+    # First char must be a letter, rest can be letters, numbers, dots, or underscores
+    if not re.match('^[a-z][a-z0-9._]*$', username):
         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
+