diff --git a/src/infrastructure/customfield/field/PhabricatorCustomField.php b/src/infrastructure/customfield/field/PhabricatorCustomField.php
index f9f5979029..64639ed34f 100644
--- a/src/infrastructure/customfield/field/PhabricatorCustomField.php
+++ b/src/infrastructure/customfield/field/PhabricatorCustomField.php
@@ -540,9 +540,7 @@ abstract class PhabricatorCustomField extends Phobject {
    * @task storage
    */
   public function newStorageObject() {
-    if ($this->proxy) {
-      return $this->proxy->newStorageObject();
-    }
+    // NOTE: This intentionally isn't proxied, to avoid call cycles.
     throw new PhabricatorCustomFieldImplementationIncompleteException($this);
   }
 
diff --git a/src/infrastructure/customfield/standard/PhabricatorStandardCustomField.php b/src/infrastructure/customfield/standard/PhabricatorStandardCustomField.php
index 76a1de9989..ac3e163f6a 100644
--- a/src/infrastructure/customfield/standard/PhabricatorStandardCustomField.php
+++ b/src/infrastructure/customfield/standard/PhabricatorStandardCustomField.php
@@ -186,7 +186,12 @@ abstract class PhabricatorStandardCustomField
   }
 
   public function shouldUseStorage() {
-    return true;
+    try {
+      $object = $this->newStorageObject();
+      return true;
+    } catch (PhabricatorCustomFieldImplementationIncompleteException $ex) {
+      return false;
+    }
   }
 
   public function getValueForStorage() {