diff --git a/include/wochenplan.class.php b/include/wochenplan.class.php
index 5ffd28bef..339f3bbc4 100644
--- a/include/wochenplan.class.php
+++ b/include/wochenplan.class.php
@@ -2305,9 +2305,9 @@ class wochenplan extends basis_db
 							$end_date_time_ical = $eda[2].$eda[1].$eda[0].'T'.sprintf('%02s',($eta[0])).$eta[1].$eta[2];  //neu gruppieren der Startzeit und des Startdatums
 							
 							echo $this->crlf.'BEGIN:VEVENT'.$this->crlf
-								.'UID:'.'FH'.$lvb.$this->std_plan[$i][$j][$idx]->ort.$this->std_plan[$i][$j][$idx]->lektor.$lehrfach[$idx].$start_date_time_ical.$this->crlf
-								.'SUMMARY:'.$lehrfach[$idx].'  '.$this->std_plan[$i][$j][$idx]->ort.' - '.$lvb.$this->crlf
-								.'DESCRIPTION:'.$lehrfach[$idx].'\n'.$this->std_plan[$i][$j][$idx]->lektor.'\n'.$lvb.'\n'.$this->std_plan[$i][$j][$idx]->ort.(LVPLAN_ANMERKUNG_ANZEIGEN?'\n'.$this->std_plan[$i][$j][$idx]->anmerkung:'').$this->crlf
+								.'UID:'.'FH'.str_replace(',',' ',$lvb.$this->std_plan[$i][$j][$idx]->ort.$this->std_plan[$i][$j][$idx]->lektor.$lehrfach[$idx].$start_date_time_ical.$this->crlf)
+								.'SUMMARY:'.str_replace(',',' ',$lehrfach[$idx].'  '.$this->std_plan[$i][$j][$idx]->ort.' - '.$lvb.$this->crlf)
+								.'DESCRIPTION:'.str_replace(',',' ',$lehrfach[$idx].'\n'.$this->std_plan[$i][$j][$idx]->lektor.'\n'.$lvb.'\n'.$this->std_plan[$i][$j][$idx]->ort.(LVPLAN_ANMERKUNG_ANZEIGEN?'\n'.$this->std_plan[$i][$j][$idx]->anmerkung:'').$this->crlf)
 								.'LOCATION:'.$this->std_plan[$i][$j][$idx]->ort.$this->crlf
 								.'CATEGORIES:'.$lvplan_kategorie.$this->crlf
 								.'DTSTART;TZID=Europe/Vienna:'.$start_date_time_ical.$this->crlf
@@ -2343,6 +2343,10 @@ class wochenplan extends basis_db
 							$Summary = $lehrfach[$idx].'  '.$this->std_plan[$i][$j][$idx]->ort.' - '.$lvb;
 							$description = $lehrfach[$idx].'\n'.$this->std_plan[$i][$j][$idx]->lektor.'\n'.$lvb.'\n'.$this->std_plan[$i][$j][$idx]->ort;
 
+							$UID = str_replace(',',' ',$UID);
+							$Summary = str_replace(',',' ',$Summary);
+							$description = str_replace(',',' ',$description);
+							
 							$return[]=array('UID'=>$UID,
 							'unr'=>$unr,
 							'Summary'=>$Summary,