diff --git a/backup.sh b/backup.sh
index 20e221c..f16594d 100755
--- a/backup.sh
+++ b/backup.sh
@@ -8,7 +8,7 @@ readonly tarball=$BACKUP_NAME$BACKUP_SUFFIX.tar.gz
 tar czf $tarball $BACKUP_TAR_OPTION $PATHS_TO_BACKUP
 
 # Create bucket, if it doesn't already exist
-BUCKET_EXIST=$(aws s3 ls | grep $S3_BUCKET_NAME | wc -l)
+BUCKET_EXIST=$(aws s3 ls | grep " ${S3_BUCKET_NAME}$" | wc -l)
 if [ $BUCKET_EXIST -eq 0 ];
 then
   aws s3 mb s3://$S3_BUCKET_NAME