diff --git a/static/js/tracker.js b/static/js/tracker.js
index a9e8f6f..c851b8e 100644
--- a/static/js/tracker.js
+++ b/static/js/tracker.js
@@ -10,7 +10,7 @@ function validate(what, text) {
   } else if (what == 'email') {
     var re = /^(([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5}){1,25})+([,.](([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5}){1,25})+)*$/;
   } else if (what == 'greenzone') {
-    var re = /^$|^[0-9]+\.[0-9]+,[0-9]+\.[0-9]+,[0-9]+\.[0-9]+,[0-9]+\.[0-9]+$/;
+    var re = /^ *$|^[0-9]+\.[0-9]+,[0-9]+\.[0-9]+,[0-9]+\.[0-9]+,[0-9]+\.[0-9]+$/;
   }
 
   return re.test(text);
diff --git a/tracker.go b/tracker.go
index a4a2c44..e76ce3d 100644
--- a/tracker.go
+++ b/tracker.go
@@ -5,6 +5,7 @@ import (
 	"log"
 	"net/http"
 	"regexp"
+        "strings"
 )
 
 // tracker handler
@@ -124,7 +125,7 @@ func save_tracker_settingsHandler(response http.ResponseWriter, request *http.Re
 			fmt.Fprintf(response, "{ \"rc\": 16, \"msg\": \"greenzone must be specified in URL\" }")
 			return
 		}
-		mygreenzone := greenzone[0]
+		mygreenzone := strings.ReplaceAll(greenzone[0]," ","")
 
 		match3, _ := regexp.MatchString(`^$|^[0-9]+\.[0-9]+,[0-9]+\.[0-9]+,[0-9]+\.[0-9]+,[0-9]+\.[0-9]+$`, mygreenzone)
 		if !(match3) {