diff --git a/Course3/Lab4/validations.py b/Course3/Lab4/validations.py
index b18de65a2e..3c37f6e520 100644
--- a/Course3/Lab4/validations.py
+++ b/Course3/Lab4/validations.py
@@ -18,7 +18,16 @@ def validate_user(username, minlen):
     # Usernames can't begin with a number
     if username[0].isnumeric():
         return False
+    #Usernames can't begin with number or dot or underscore
+    if username[0].isdigit() or username[0] in "._":
+        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