diff --git a/src/main/resources/ch/ethz/seb/sebserver/gui/service/session/proctoring/openRoomScript.js b/src/main/resources/ch/ethz/seb/sebserver/gui/service/session/proctoring/openRoomScript.js
index 28714361..ea995acb 100644
--- a/src/main/resources/ch/ethz/seb/sebserver/gui/service/session/proctoring/openRoomScript.js
+++ b/src/main/resources/ch/ethz/seb/sebserver/gui/service/session/proctoring/openRoomScript.js
@@ -1,7 +1,7 @@
 try {
     var existingWin = window.open('', '%s', 'height=%s,width=%s,location=no,scrollbars=yes,status=no,menubar=0,toolbar=no,titlebar=no,dialog=no');
     if (existingWin == null || typeof(existingWin)=='undefined') {  
-        alert('Please disable your pop-up blocker and try again.'); 
+        alert('Please disable your pop-up blocker and try again.');
     } else {
         if(existingWin.location.href === 'about:blank') {
             existingWin.document.title = '%s';