diff --git a/customize.sh b/customize.sh
index 77389fd..8e7bf77 100644
--- a/customize.sh
+++ b/customize.sh
@@ -14,7 +14,7 @@ mkdir -p $MODPATH/system/etc
 # download latest v2ray core from official link
 ui_print "- Connect official V2Ray download link."
 official_v2ray_link="https://github.com/v2ray/v2ray-core/releases"
-latest_v2ray_version=`curl -k -s -I "${official_v2ray_link}/latest" | grep location | grep -o "tag.*" | grep -o "v[0-9.]*"`
+latest_v2ray_version=`curl -k -s -I "${official_v2ray_link}/latest" | grep -i location | grep -o "tag.*" | grep -o "v[0-9.]*"`
 if [ "${latest_v2ray_version}" = "" ] ; then
   ui_print "Error: Connect official V2Ray download link failed." 
   exit 1