diff --git a/Chapter-4/1-geoIP.py b/Chapter-4/1-geoIP.py
index d29abf3..49f1ac0 100644
--- a/Chapter-4/1-geoIP.py
+++ b/Chapter-4/1-geoIP.py
@@ -1,13 +1,16 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 import pygeoip
-gi = pygeoip.GeoIP('/opt/GeoIP/Geo.dat')
+
+
+gi = pygeoip.GeoIP('GeoLiteCity.dat')
+
 
 
 def printRecord(tgt):
     rec = gi.record_by_name(tgt)
     city = rec['city']
-    region = rec['region_name']
+    region = rec['region_code']
     country = rec['country_name']
     long = rec['longitude']
     lat = rec['latitude']
diff --git a/Chapter-4/3-geoPrint.py b/Chapter-4/3-geoPrint.py
index f931d40..a593f95 100644
--- a/Chapter-4/3-geoPrint.py
+++ b/Chapter-4/3-geoPrint.py
@@ -4,7 +4,7 @@
 import socket
 import pygeoip
 import optparse
-gi = pygeoip.GeoIP('/opt/GeoIP/Geo.dat')
+gi = pygeoip.GeoIP('GeoLiteCity.dat')
 
 
 def retGeoStr(ip):
diff --git a/Chapter-4/4-googleEarthPcap.py b/Chapter-4/4-googleEarthPcap.py
index 88e5157..a1881f9 100644
--- a/Chapter-4/4-googleEarthPcap.py
+++ b/Chapter-4/4-googleEarthPcap.py
@@ -4,7 +4,7 @@
 import socket
 import pygeoip
 import optparse
-gi = pygeoip.GeoIP('/opt/GeoIP/Geo.dat')
+gi = pygeoip.GeoIP('Geo.dat')
 
 
 def retKML(ip):
diff --git a/Chapter-4/GeoLiteCity.dat b/Chapter-4/GeoLiteCity.dat
new file mode 100644
index 0000000..411aa39
Binary files /dev/null and b/Chapter-4/GeoLiteCity.dat differ