diff --git a/src/views/network.js b/src/views/network.js
index 80c107e8c..a1b15a337 100644
--- a/src/views/network.js
+++ b/src/views/network.js
@@ -82,7 +82,11 @@ angular.module('Application').controller('NetworkController', ['$scope', '$locat
             $scope.blocklist.error = {};
             $scope.blocklist.busy = true;
 
-            var blocklist = $scope.blocklist.blocklist.split('\n').filter(function (x) { return x !== ''; });
+            // remove empty and dedupe array
+            var blocklist = $scope.blocklist.blocklist.split('\n')
+                .map(function (ip) { return ip.trim(); })
+                .filter(function (ip) { return ip !== ''; })
+                .filter(function(item, pos, self) { return self.indexOf(item) == pos; });
 
             Client.setBlocklist(blocklist, function (error) {
                 $scope.blocklist.busy = false;