diff --git a/framework/core/src/Discussion/Search/Gambit/AuthorGambit.php b/framework/core/src/Discussion/Search/Gambit/AuthorGambit.php
index 0b321448d..a67f76b8c 100644
--- a/framework/core/src/Discussion/Search/Gambit/AuthorGambit.php
+++ b/framework/core/src/Discussion/Search/Gambit/AuthorGambit.php
@@ -54,6 +54,6 @@ class AuthorGambit extends AbstractRegexGambit
             $ids[] = $this->users->getIdForUsername($username);
         }
 
-        $search->getQuery()->whereIn('user_id', $ids, 'and', $negate);
+        $search->getQuery()->whereIn('discussions.user_id', $ids, 'and', $negate);
     }
 }
diff --git a/framework/core/tests/Api/Controller/ListDiscussionControllerTest.php b/framework/core/tests/Api/Controller/ListDiscussionControllerTest.php
index 695b378c2..9ccd265f3 100644
--- a/framework/core/tests/Api/Controller/ListDiscussionControllerTest.php
+++ b/framework/core/tests/Api/Controller/ListDiscussionControllerTest.php
@@ -13,9 +13,12 @@ namespace Flarum\Tests\Api\Controller;
 
 use Flarum\Api\Controller\ListDiscussionsController;
 use Flarum\Discussion\Discussion;
+use Flarum\Tests\Test\Concerns\RetrievesAuthorizedUsers;
 
 class ListDiscussionControllerTest extends ApiControllerTestCase
 {
+    use RetrievesAuthorizedUsers;
+
     protected $controller = ListDiscussionsController::class;
 
     /**
@@ -30,4 +33,21 @@ class ListDiscussionControllerTest extends ApiControllerTestCase
 
         $this->assertEquals(Discussion::count(), count($data['data']));
     }
+
+    /**
+     * @test
+     */
+    public function can_search_for_author()
+    {
+        $user = $this->getNormalUser();
+
+        $response = $this->callWith([], [
+            'filter' => [
+                'q' => 'author:'.$user->username.' foo'
+            ],
+            'include' => 'mostRelevantPost'
+        ]);
+
+        $this->assertEquals(200, $response->getStatusCode());
+    }
 }