diff --git a/src/applications/ponder/query/PonderQuestionQuery.php b/src/applications/ponder/query/PonderQuestionQuery.php
index dd5db40a48..480f2c3296 100644
--- a/src/applications/ponder/query/PonderQuestionQuery.php
+++ b/src/applications/ponder/query/PonderQuestionQuery.php
@@ -129,7 +129,7 @@ final class PonderQuestionQuery
     return $questions;
   }
 
-  private function buildJoinsClause(AphrontDatabaseConnection $conn_r) {
+  protected function buildJoinClauseParts(AphrontDatabaseConnection $conn_r) {
     $joins = array();
 
     if ($this->answererPHIDs) {
@@ -141,7 +141,7 @@ final class PonderQuestionQuery
         $this->answererPHIDs);
     }
 
-    return implode(' ', $joins);
+    return $joins;
   }
 
   protected function getPrimaryTableAlias() {
diff --git a/src/applications/ponder/query/PonderQuestionSearchEngine.php b/src/applications/ponder/query/PonderQuestionSearchEngine.php
index b4cb7aef21..6692d8282a 100644
--- a/src/applications/ponder/query/PonderQuestionSearchEngine.php
+++ b/src/applications/ponder/query/PonderQuestionSearchEngine.php
@@ -96,7 +96,7 @@ final class PonderQuestionSearchEngine
           array($this->requireViewer()->getPHID()));
       case 'answered':
         return $query->setParameter(
-          'answererPHIDs',
+          'answerers',
           array($this->requireViewer()->getPHID()));
     }