diff --git a/test/spec/groupCtrlSpec.js b/test/spec/groupCtrlSpec.js
index 5b2ecd60e5..7416c90a4e 100644
--- a/test/spec/groupCtrlSpec.js
+++ b/test/spec/groupCtrlSpec.js
@@ -133,6 +133,11 @@ describe("Autocomplete controller", function() {
       expect(scope.filterUser({user: "prefix"})).to.be.eq(true);
     });
 
+    it('filters with prefix of a different case and element and returns true', function() {
+      scope.query = {text: "pre"}
+      expect(scope.filterUser({user: "Prefix"})).to.be.eq(true);
+    });
+
     it('filters with nonprefix element and returns false', function() {
       scope.query = {text: "noprefix"}
       expect(scope.filterUser({user: "prefix"})).to.be.eq(false);
diff --git a/website/public/js/controllers/groupsCtrl.js b/website/public/js/controllers/groupsCtrl.js
index 0f1744dc66..26a4196a97 100644
--- a/website/public/js/controllers/groupsCtrl.js
+++ b/website/public/js/controllers/groupsCtrl.js
@@ -225,7 +225,11 @@ habitrpg.controller("GroupsCtrl", ['$scope', '$rootScope', 'Shared', 'Groups', '
         return false;
       }
 
-      return msg.user.indexOf($scope.query.text) == 0;
+      // Ignore casing when checking for username
+      var user = msg.user.toLowerCase();
+      var text = $scope.query.text.toLowerCase();
+
+      return user.indexOf(text) == 0;
     }
 
     $scope.addNewUser = function(user) {