diff --git a/xCAT/postscripts/documulusdiscovery b/xCAT/postscripts/documulusdiscovery
index ea12406bc..c3e9d8db7 100755
--- a/xCAT/postscripts/documulusdiscovery
+++ b/xCAT/postscripts/documulusdiscovery
@@ -1,6 +1,6 @@
 #!/bin/bash
 #this script grabs the switch information, then composes a "findme" request and sends it to MN
-#so that the switch can be discovered 
+#so that the switch can be discovered
 
 # TODO: Figure out the master based on the DHCP packet
 XCATMASTER=$(cat /var/lib/dhcp/dhclient.eth0.leases |grep cumulus-provision-url|tail -1|awk -F/ '{print $3}')
@@ -112,20 +112,20 @@ while [ $RETRY -lt $MAX_RETRY ]; do
             if grep "restart" /tmp/result.socat.out; then
                 DISCOVERED=1
                 break;
-            elif grep "processing" /tmp/result.socat.out; then 
+            elif grep "processing" /tmp/result.socat.out; then
                 echo "My findme request is still under processing, do not send new request"
                 logger -s -t $log_label -p local4.info  "My findme request is still under processing, do not send new request"
                 sleep 6
             elif grep "processed" /tmp/result.socat.out; then
                 echo "Fail to discover me, retry to send findme request 900 seconds later!"
                 logger -s -t $log_label -p local4.info "Fail to discover me, retry to send findme request 900 seconds later"
-                sleep 900 
+                sleep 900
                 break;
             else
                 echo "no response from $XCATMASTER, wait for 6 seconds"
                 logger -s -t $log_label -p local4.info "no response from $XCATMASTER, wait for 6 seconds"
                 sleep 6
-            fi 
+            fi
         fi
         ((WAITRETRY=WAITRETRY+1))
     done
@@ -133,7 +133,7 @@ while [ $RETRY -lt $MAX_RETRY ]; do
     if [ "$DISCOVERED" = "1" ]; then
         break
     fi
-    
+
     ((RETRY=RETRY+1))
 done