diff --git a/src/infrastructure/customfield/standard/PhabricatorStandardCustomFieldLink.php b/src/infrastructure/customfield/standard/PhabricatorStandardCustomFieldLink.php
index 66f3605b9c..c2b9d6543c 100644
--- a/src/infrastructure/customfield/standard/PhabricatorStandardCustomFieldLink.php
+++ b/src/infrastructure/customfield/standard/PhabricatorStandardCustomFieldLink.php
@@ -1,100 +1,105 @@
 <?php
 
 final class PhabricatorStandardCustomFieldLink
   extends PhabricatorStandardCustomField {
 
   public function getFieldType() {
     return 'link';
   }
 
   public function buildFieldIndexes() {
     $indexes = array();
 
     $value = $this->getFieldValue();
     if (strlen($value)) {
       $indexes[] = $this->newStringIndex($value);
     }
 
     return $indexes;
   }
 
   public function renderPropertyViewValue(array $handles) {
     $value = $this->getFieldValue();
 
     if (!strlen($value)) {
       return null;
     }
 
     if (!PhabricatorEnv::isValidRemoteURIForLink($value)) {
       return $value;
     }
 
     return phutil_tag(
       'a',
       array('href' => $value, 'target' => '_blank'),
       $value);
   }
 
   public function readApplicationSearchValueFromRequest(
     PhabricatorApplicationSearchEngine $engine,
     AphrontRequest $request) {
 
     return $request->getStr($this->getFieldKey());
   }
 
   public function applyApplicationSearchConstraintToQuery(
     PhabricatorApplicationSearchEngine $engine,
     PhabricatorCursorPagedPolicyAwareQuery $query,
     $value) {
 
-    if (strlen($value)) {
+    if (is_string($value) && !strlen($value)) {
+      return;
+    }
+
+    $value = (array)$value;
+    if ($value) {
       $query->withApplicationSearchContainsConstraint(
         $this->newStringIndex(null),
         $value);
     }
   }
 
   public function appendToApplicationSearchForm(
     PhabricatorApplicationSearchEngine $engine,
     AphrontFormView $form,
     $value) {
 
     $form->appendChild(
       id(new AphrontFormTextControl())
         ->setLabel($this->getFieldName())
         ->setName($this->getFieldKey())
         ->setValue($value));
   }
 
   public function shouldAppearInHerald() {
     return true;
   }
 
   public function getHeraldFieldConditions() {
     return array(
       HeraldAdapter::CONDITION_CONTAINS,
       HeraldAdapter::CONDITION_NOT_CONTAINS,
       HeraldAdapter::CONDITION_IS,
       HeraldAdapter::CONDITION_IS_NOT,
       HeraldAdapter::CONDITION_REGEXP,
       HeraldAdapter::CONDITION_NOT_REGEXP,
     );
   }
 
   public function getHeraldFieldStandardType() {
     return HeraldField::STANDARD_TEXT;
   }
 
   protected function getHTTPParameterType() {
     return new AphrontStringHTTPParameterType();
   }
 
   protected function newConduitSearchParameterType() {
     return new ConduitStringListParameterType();
   }
 
   protected function newConduitEditParameterType() {
     return new ConduitStringParameterType();
   }
 
 }