diff --git a/Course3/Lab4/validations.py b/Course3/Lab4/validations.py
index b18de65a2e..6b1be5e509 100644
--- a/Course3/Lab4/validations.py
+++ b/Course3/Lab4/validations.py
@@ -13,8 +13,9 @@ def validate_user(username, minlen):
     if len(username) < minlen:
         return False
     # Usernames can only use letters, numbers, dots and underscores
-    if not re.match('^[a-z0-9._]*$', username):
-        return False
+    # username doesnot start with an letter
+    if not re.match('^[a-zA-Z][a-z0-9._]*$', username):
+        return False 
     # Usernames can't begin with a number
     if username[0].isnumeric():
         return False
@@ -22,3 +23,7 @@ def validate_user(username, minlen):
 
 
 
+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