diff --git a/src/Mpociot/Teamwork/Traits/UserHasTeams.php b/src/Mpociot/Teamwork/Traits/UserHasTeams.php
index b9a71f3..4ed7652 100644
--- a/src/Mpociot/Teamwork/Traits/UserHasTeams.php
+++ b/src/Mpociot/Teamwork/Traits/UserHasTeams.php
@@ -119,12 +119,10 @@ protected function retrieveTeamId( $team )
      */
     public function isOwnerOfTeam( $team )
     {
-        $team        = $this->retrieveTeamId( $team );
-        $teamModel   = Config::get( 'teamwork.team_model' );
-        $teamKeyName = ( new $teamModel() )->getKeyName();
-        return ( ( new $teamModel )
-            ->where( "owner_id", "=", $this->getKey() )
-            ->where( $teamKeyName, "=", $team )->first()
+        $team_id        = $this->retrieveTeamId( $team );
+        return ( $this->teams()
+            ->where('owner_id', $this->getKey())
+            ->where('team_id', $team_id)->first()
         ) ? true : false;
     }