diff --git a/content/lvplanung/stpl-details-dialog.xul.php b/content/lvplanung/stpl-details-dialog.xul.php
index 3b1b1bea9..137f6aa0a 100644
--- a/content/lvplanung/stpl-details-dialog.xul.php
+++ b/content/lvplanung/stpl-details-dialog.xul.php
@@ -100,7 +100,9 @@ $studiengang->load($stundenplan->studiengang_kz);
 				</row>
 				<row>
 					<label value="Semester" />
-					<label value="<?php echo $stundenplan->semester; ?>" id="stpl-details-dialog-label-semester"/>
+					<hbox>
+						<textbox value="<?php echo htmlspecialchars($stundenplan->semester); ?>" id="stpl-details-dialog-textbox-semester" maxlength="1" size="1"/>
+					</hbox>
       			</row>
       			<row>
 					<label value="Verband" />
diff --git a/content/lvplanung/stpl-week-overlay.js.php b/content/lvplanung/stpl-week-overlay.js.php
index 6a054a43d..aaac8671c 100644
--- a/content/lvplanung/stpl-week-overlay.js.php
+++ b/content/lvplanung/stpl-week-overlay.js.php
@@ -479,7 +479,12 @@ function STPLDetailSave(dialog)
 	var anmerkung = dialog.getElementById('stpl-details-dialog-textbox-anmerkung').value;
 	var fix = dialog.getElementById('stpl-details-dialog-checkbox-fix').checked;
 	var mitarbeiter_uid = dialog.getElementById('stpl-details-dialog-menulist-lektor').value;
-	
+	var semester = dialog.getElementById('stpl-details-dialog-textbox-semester').value;
+	if(semester=='')
+	{
+		alert('Semester darf nicht leer sein');
+		return false;
+	}
 	var url = '<?php echo APP_ROOT ?>content/tempusDBDML.php';
 	var req = new phpRequest(url,'','');
 	
@@ -498,6 +503,7 @@ function STPLDetailSave(dialog)
 	req.add('stundenplan_id', id);
 	req.add('fix', fix);
 	req.add('mitarbeiter_uid', mitarbeiter_uid);
+	req.add('semester',semester);
 	
 	var response = req.executePOST();
 
diff --git a/content/tempusDBDML.php b/content/tempusDBDML.php
index e218ac460..511c53a63 100644
--- a/content/tempusDBDML.php
+++ b/content/tempusDBDML.php
@@ -233,6 +233,7 @@ if(!$error)
 			$stundenplan->mitarbeiter_uid = $_POST['mitarbeiter_uid'];
 			$stundenplan->updateamum = date('Y-m-d H:i:s');
 			$stundenplan->updatevon = get_uid();
+			$stundenplan->semester = $_POST['semester'];
 			
 			if($stundenplan->save(false))
 			{