diff --git a/application/controllers/api/frontend/v1/stv/Prestudent.php b/application/controllers/api/frontend/v1/stv/Prestudent.php
index 8e9e0bf0b..635358808 100644
--- a/application/controllers/api/frontend/v1/stv/Prestudent.php
+++ b/application/controllers/api/frontend/v1/stv/Prestudent.php
@@ -264,18 +264,15 @@ class Prestudent extends FHCAPI_Controller
 		return $this->terminateWithSuccess(getData($result) ?: []);
 	}
 
-	public function getStudienplaene($prestudent_ids)
+	public function getStudienplaene($prestudent_id)
 	{
-		$prestudent_ids = urldecode($prestudent_ids);
-
+		if (!is_int($prestudent_id))
+			show_404();
 		$this->load->model('organisation/Studienplan_model', 'StudienplanModel');
-		$result = $this->StudienplanModel->getStudienplaeneByPrestudents($prestudent_ids);
+		$result = $this->StudienplanModel->getStudienplaeneByPrestudents($prestudent_id);
 
+		$data = $this->getDataOrTerminateWithError($result);
 
-		if (isError($result))
-		{
-			$this->terminateWithError(getError($result), self::ERROR_TYPE_GENERAL);
-		}
-		return $this->terminateWithSuccess(getData($result) ?: []);
+		return $this->terminateWithSuccess($data);
 	}
 }
diff --git a/application/models/organisation/Studienplan_model.php b/application/models/organisation/Studienplan_model.php
index 3c6e0b2d2..e35ba52fb 100644
--- a/application/models/organisation/Studienplan_model.php
+++ b/application/models/organisation/Studienplan_model.php
@@ -120,19 +120,18 @@ class Studienplan_model extends DB_Model
 		]);
 	}
 
-	public function getStudienplaeneByPrestudents($prestudentIds)
+	public function getStudienplaeneByPrestudents($prestudent_id)
 	{
-		$prestudentIds = intVal($prestudentIds);
+		$this->addDistinct();
+		$this->addSelect($this->dbTable . '.*');
+		$this->addSelect('sem.start AS start_stsem');
+		$this->addJoin('lehre.tbl_studienordnung o', 'studienordnung_id');
+		$this->addJoin('public.tbl_prestudent p', 'studiengang_kz');
+		$this->addJoin('public.tbl_studiensemester sem', 'sem.studiensemester_kurzbz = o.gueltigvon', 'LEFT');
+		$this->addOrder('sem.start');
 
-		$query = "
-			SELECT so.studienordnung_id, sp.bezeichnung 
-			FROM public.tbl_prestudent ps
-			JOIN lehre.tbl_studienordnung so ON (ps.studiengang_kz = so.studiengang_kz)
-			JOIN lehre.tbl_studienplan sp ON (sp.studienordnung_id = so.studienordnung_id)
-			WHERE ps.prestudent_id IN (?)
-			ORDER BY so.studienordnung_id DESC
-		";
-
-		return $this->execQuery($query, array($prestudentIds));
+		return $this->loadWhere([
+			'prestudent_id' => $prestudent_id
+		]);
 	}
 }