diff --git a/application/controllers/system/infocenter/InfoCenter.php b/application/controllers/system/infocenter/InfoCenter.php
index ae1cc0e95..21b1a515e 100644
--- a/application/controllers/system/infocenter/InfoCenter.php
+++ b/application/controllers/system/infocenter/InfoCenter.php
@@ -338,7 +338,7 @@ class InfoCenter extends VileSci_Controller
 	// Private methods
 
 	/**
-	 * Retrive the UID of the logged user and checks if it is valid
+	 * Retrieve the UID of the logged user and checks if it is valid
 	 */
 	private function _setAuthUID()
 	{
@@ -498,11 +498,13 @@ class InfoCenter extends VileSci_Controller
 
 			$zgvpruefung = $prestudent->retval[0];
 
-			$position = strpos($zgvpruefung->prestudentstatus->anmerkung, 'Alt:');
-
-			//parse Anmerkung for Alternative (Prio is given in orgform and sprache anyway)
-			$zgvpruefung->prestudentstatus->alternative = is_numeric($position) ? substr($zgvpruefung->prestudentstatus->anmerkung, $position) : null;
+			if(isset($zgvpruefung->prestudentstatus))
+			{
+				$position = strpos($zgvpruefung->prestudentstatus->anmerkung, 'Alt:');
 
+				//parse Anmerkung for Alternative (Prio is given in orgform and sprache anyway)
+				$zgvpruefung->prestudentstatus->alternative = is_numeric($position) ? substr($zgvpruefung->prestudentstatus->anmerkung, $position) : null;
+			}
 			//if prestudent is not interessent or is already bestaetigt, then show only as information, non-editable
 			$zgvpruefung->infoonly = !isset($zgvpruefung->prestudentstatus) || isset($zgvpruefung->prestudentstatus->bestaetigtam) || $zgvpruefung->prestudentstatus->status_kurzbz != 'Interessent';