diff --git a/scripts/update.sh b/scripts/update.sh
index 38783ab71..87906c4a0 100755
--- a/scripts/update.sh
+++ b/scripts/update.sh
@@ -44,5 +44,5 @@ else
 fi
 
 endTime=`date +%s`
-((outTime=($endTime-$startTime)/60))
+outTime=($endTime-$startTime)/60
 echo -e "Time consumed:\033[32m $outTime \033[0mMinute!"
\ No newline at end of file