diff --git a/module/projectrelease/model.php b/module/projectrelease/model.php
index 388eb1345a..5f39246a35 100644
--- a/module/projectrelease/model.php
+++ b/module/projectrelease/model.php
@@ -109,6 +109,9 @@ class projectreleaseModel extends model
         $oldRelease = $this->dao->select('*')->from(TABLE_RELEASE)->where('id')->eq($releaseID)->fetch();
         $branch     = $this->dao->select('branch')->from(TABLE_BUILD)->where('id')->eq((int)$this->post->build)->fetch('branch');
 
+        /* Check build if build is required. */
+        if(strpos($this->config->release->edit->requiredFields, 'build') !== false and $this->post->build == false) return dao::$errors['build'] = sprintf($this->lang->error->notempty, $this->lang->release->build);
+
         $release = fixer::input('post')->stripTags($this->config->release->editor->edit['id'], $this->config->allowedTags)
             ->add('branch',  (int)$branch)
             ->join('mailto', ',')
diff --git a/module/release/config.php b/module/release/config.php
index 7e52377cd7..e49f950c9e 100644
--- a/module/release/config.php
+++ b/module/release/config.php
@@ -3,7 +3,7 @@ $config->release = new stdclass();
 $config->release->create = new stdclass();
 $config->release->edit   = new stdclass();
 $config->release->create->requiredFields = 'name,date';
-$config->release->edit->requiredFields   = 'name,date';
+$config->release->edit->requiredFields   = 'name,build,date';
 
 $config->release->editor = new stdclass();
 $config->release->editor->create = array('id' => 'desc', 'tools' => 'simpleTools');