diff --git a/db.py b/db.py
index b3728b7..bfb382c 100644
--- a/db.py
+++ b/db.py
@@ -15,7 +15,7 @@ class User(Base):
 	credit = Column(Integer)
 
 	name_re = r"[a-z]+"
-	card_re = r"((ntnu)?[0-9]+)?"
+	card_re = r"(([Nn][Tt][Nn][Uu])?[0-9]+)?"
 
 	def __init__(self, name, card, credit=0):
 		self.name = name
diff --git a/helpers.py b/helpers.py
index cf14a3f..156d5d9 100644
--- a/helpers.py
+++ b/helpers.py
@@ -6,6 +6,7 @@ import os
 import signal
 
 def search_user(string, session):
+	string = string.lower()
 	exact_match = session.query(User).filter(or_(User.name==string, User.card==string)).first()
 	if exact_match:
 		return exact_match
diff --git a/text_based.py b/text_based.py
index f78758b..bad0030 100755
--- a/text_based.py
+++ b/text_based.py
@@ -546,6 +546,7 @@ class AddUserMenu(Menu):
 		self.print_header()
 		username = self.input_str('Username (should be same as PVV username)> ', User.name_re, (1,10))
 		cardnum = self.input_str('Card number (optional)> ', User.card_re, (0,10))
+                cardnum = cardnum.lower()
 		user = User(username, cardnum)
 		self.session.add(user)
 		try:
@@ -576,6 +577,7 @@ user (write an empty line to remove the card number).
 		user.card = self.input_str('Card number (currently %s)> ' % card_str,
 					   User.card_re, (0,10),
 					   empty_string_is_none=True)
+		user.card = user.card.lower()
 		try:
 			self.session.commit()
 			print 'User %s stored' % user.name