diff --git a/arpcheck b/arpcheck
index 800bf2f..b8ae36f 100755
--- a/arpcheck
+++ b/arpcheck
@@ -22,15 +22,15 @@ alert() {
 #stdbuf -oL arping "$IP" | while read line
 while read line
 do
-  echo "$line"
+  #echo "$line"
   if [ "$line" = "Timeout" ]; then
     if [ "$startedTimeout" = "n" ]; then
       startedTimeout="y"
       counter=1
-      echo "$counter"
+      #echo "$counter"
     else
       let "counter += 1"
-      echo "******** $counter"
+      #echo "******** $counter"
       if [ $counter -eq $countToAway ]; then
         alert "$ALERT_TITLE" "$ALERT_MESSAGE_AWAY"
         alertedHome="n"
@@ -39,8 +39,10 @@ do
     fi 
   else
     if [ "$startedTimeout" = "y" ]; then
-      if [ "$counter" -ge `expr 600 / $INTERVAL` && "$counter" -le `expr 1800 / $INTERVAL ]; then
-        echo "$counter" >> "$LOGFILE"
+      if [ "$counter" -ge $((600 / $INTERVAL)) ]; then
+        if [ "$counter" -le $((1800 / $INTERVAL)) ]; then
+          echo "$counter" >> "$LOGFILE"
+        fi
       fi
       startedTimeout="n"
       counter=0