diff --git a/static/directives/manual-trigger-build-dialog.html b/static/directives/manual-trigger-build-dialog.html
index 8a8b8ee9e..eb23f370c 100644
--- a/static/directives/manual-trigger-build-dialog.html
+++ b/static/directives/manual-trigger-build-dialog.html
@@ -45,7 +45,7 @@
                     <!-- Regex -->
                     <div ng-switch-when="regex">
                       <input type="text" class="form-control" ng-model="parameters[field.name]"
-                             ng-pattern="getPattern(field)"
+                             ng-pattern="field.regex"
                              placeholder="{{ field.placeholder }}"
                              ng-name="field.name"
                              id="{{ field.name }}"
diff --git a/static/js/directives/ui/manual-trigger-build-dialog.js b/static/js/directives/ui/manual-trigger-build-dialog.js
index 80e1c631a..c3dfff087 100644
--- a/static/js/directives/ui/manual-trigger-build-dialog.js
+++ b/static/js/directives/ui/manual-trigger-build-dialog.js
@@ -34,10 +34,6 @@ angular.module('quay').directive('manualTriggerBuildDialog', function () {
         }, ApiService.errorDisplay('Could not start build'));
       };
 
-      $scope.getPattern = function(field) {
-        return new RegExp(field.regex);
-      };
-
       $scope.show = function() {
         $scope.parameters = {};
         $scope.fieldOptions = {};