diff --git a/app/assets/javascripts/discourse/components/auto_close_form_component.js b/app/assets/javascripts/discourse/components/auto_close_form_component.js
index 2d8e1bbe7..b760c7109 100644
--- a/app/assets/javascripts/discourse/components/auto_close_form_component.js
+++ b/app/assets/javascripts/discourse/components/auto_close_form_component.js
@@ -8,7 +8,7 @@ Discourse.AutoCloseFormComponent = Ember.Component.extend({
 
   autoCloseChanged: function() {
     if( this.get('autoCloseTime') && this.get('autoCloseTime').length > 0 ) {
-      this.set('autoCloseTime', this.get('autoCloseTime').replace(/[^\d-\s\:]/g, '') );
+      this.set('autoCloseTime', this.get('autoCloseTime').replace(/[^:\d-\s]/g, '') );
     }
     this.set('autoCloseValid', this.isAutoCloseValid());
   }.observes('autoCloseTime'),
diff --git a/app/assets/javascripts/discourse/lib/user_search.js b/app/assets/javascripts/discourse/lib/user_search.js
index c9756046c..9bf1989c9 100644
--- a/app/assets/javascripts/discourse/lib/user_search.js
+++ b/app/assets/javascripts/discourse/lib/user_search.js
@@ -35,7 +35,7 @@ Discourse.UserSearch = {
     var promise = Ember.Deferred.create();
 
     // TODO site setting for allowed regex in username
-    if (term.match(/[^a-zA-Z0-9\_\.]/)) {
+    if (term.match(/[^a-zA-Z0-9_\.]/)) {
       promise.resolve([]);
       return promise;
     }