diff --git a/index.php b/index.php
index 3a03352..67cf646 100755
--- a/index.php
+++ b/index.php
@@ -464,13 +464,13 @@ $host = gethostbyaddr($ipaddress);
     }
 ?>
 <?php
-$geoip_country_code = getenv(GEOIP_COUNTRY_CODE);
-$geoip_country_name = getenv(GEOIP_COUNTRY_NAME);
-$geoip_region = getenv(GEOIP_REGION);
-$geoip_city = getenv(GEOIP_CITY);
-$geoip_postal_code = getenv(GEOIP_POSTAL_CODE);
-$geoip_latitude = getenv(GEOIP_LATITUDE);
-$geoip_longitude = getenv(GEOIP_LONGITUDE);
+$geoip_country_code = getenv('GEOIP_COUNTRY_CODE');
+$geoip_country_name = getenv('GEOIP_COUNTRY_NAME');
+$geoip_region = getenv('GEOIP_REGION');
+$geoip_city = getenv('GEOIP_CITY');
+$geoip_postal_code = getenv('GEOIP_POSTAL_CODE');
+$geoip_latitude = getenv('GEOIP_LATITUDE');
+$geoip_longitude = getenv('GEOIP_LONGITUDE');
 ?>
 </head>