diff --git a/framework/core/js/forum/dist/app.js b/framework/core/js/forum/dist/app.js
index 60a6267de..259474a05 100644
--- a/framework/core/js/forum/dist/app.js
+++ b/framework/core/js/forum/dist/app.js
@@ -21470,6 +21470,8 @@ System.register('flarum/components/DiscussionsSearchSource', ['flarum/helpers/hi
           value: function search(query) {
             var _this = this;
 
+            query = query.toLowerCase();
+
             this.results[query] = [];
 
             var params = {
@@ -21485,6 +21487,8 @@ System.register('flarum/components/DiscussionsSearchSource', ['flarum/helpers/hi
         }, {
           key: 'view',
           value: function view(query) {
+            query = query.toLowerCase();
+
             var results = this.results[query] || [];
 
             return [m(
@@ -28066,6 +28070,8 @@ System.register('flarum/components/UsersSearchSource', ['flarum/helpers/highligh
         }, {
           key: 'view',
           value: function view(query) {
+            query = query.toLowerCase();
+
             var results = app.store.all('users').filter(function (user) {
               return user.username().toLowerCase().substr(0, query.length) === query;
             });
diff --git a/framework/core/js/forum/src/components/DiscussionsSearchSource.js b/framework/core/js/forum/src/components/DiscussionsSearchSource.js
index 6ab1b3d99..e1d1e1c4f 100644
--- a/framework/core/js/forum/src/components/DiscussionsSearchSource.js
+++ b/framework/core/js/forum/src/components/DiscussionsSearchSource.js
@@ -13,6 +13,8 @@ export default class DiscussionsSearchSource {
   }
 
   search(query) {
+    query = query.toLowerCase();
+
     this.results[query] = [];
 
     const params = {
@@ -25,6 +27,8 @@ export default class DiscussionsSearchSource {
   }
 
   view(query) {
+    query = query.toLowerCase();
+
     const results = this.results[query] || [];
 
     return [
diff --git a/framework/core/js/forum/src/components/UsersSearchSource.js b/framework/core/js/forum/src/components/UsersSearchSource.js
index 0ea76e22c..f05fbb30d 100644
--- a/framework/core/js/forum/src/components/UsersSearchSource.js
+++ b/framework/core/js/forum/src/components/UsersSearchSource.js
@@ -17,6 +17,8 @@ export default class UsersSearchResults {
   }
 
   view(query) {
+    query = query.toLowerCase();
+
     const results = app.store.all('users')
       .filter(user => user.username().toLowerCase().substr(0, query.length) === query);