diff --git a/src/Core/Search/Discussion/Gambit/AuthorGambit.php b/src/Core/Search/Discussion/Gambit/AuthorGambit.php
index 640e7b752..62e399cd3 100644
--- a/src/Core/Search/Discussion/Gambit/AuthorGambit.php
+++ b/src/Core/Search/Discussion/Gambit/AuthorGambit.php
@@ -45,10 +45,14 @@ class AuthorGambit extends AbstractRegexGambit
             throw new LogicException('This gambit can only be applied on a DiscussionSearch');
         }
 
-        $username = trim($matches[1], '"');
+        $usernames = trim($matches[1], '"');
+        $usernames = explode(',', $usernames);
 
-        $id = $this->users->getIdForUsername($username);
+        $ids = [];
+        foreach($usernames as $username) {
+            $ids[] = $this->users->getIdForUsername($username);
+        }
 
-        $search->getQuery()->where('start_user_id', $negate ? '!=' : '=', $id);
+        $search->getQuery()->whereIn('start_user_id', $ids, 'and', $negate);
     }
 }