diff --git a/src/applications/repository/storage/PhabricatorRepository.php b/src/applications/repository/storage/PhabricatorRepository.php
--- a/src/applications/repository/storage/PhabricatorRepository.php
+++ b/src/applications/repository/storage/PhabricatorRepository.php
@@ -1781,11 +1781,11 @@
 /* -(  Symbols  )-------------------------------------------------------------*/
 
   public function getSymbolSources() {
-    return $this->getDetail('symbol-sources');
+    return $this->getDetail('symbol-sources', array());
   }
 
   public function getSymbolLanguages() {
-    return $this->getDetail('symbol-languages');
+    return $this->getDetail('symbol-languages', array());
   }