diff --git a/apps/postgres-logical-backup/entrypoint.sh b/apps/postgres-logical-backup/entrypoint.sh
index 20fbe669..1374b34a 100644
--- a/apps/postgres-logical-backup/entrypoint.sh
+++ b/apps/postgres-logical-backup/entrypoint.sh
@@ -103,10 +103,10 @@ if [ -n "${DELETE_OLDER_THAN}" ]; then
   # shellcheck disable=SC2086
   aws ${AWS_ARGS} s3 ls "s3://${S3_BUCKET}/${S3_PREFIX}/" | grep " PRE " -v | while read -r line;
     do
-      fileName=$(echo "$line"|awk "{'print \$4'}")
-      created=$(echo "$line"|awk "{'print \$1\" \"\$2'}")
-      created=$(date -d "$created" +%s)
-      older_than=$(date -d "$DELETE_OLDER_THAN" +%s)
+      fileName="$(echo $line|awk '{ print $4 }')"
+      created="$(echo $line|awk '{ print $1 " " $2 }')"
+      created="$(date -d "$created" +%s)"
+      older_than="$(date -d "$DELETE_OLDER_THAN" +%s)"
       if [ "$created" -lt "$older_than" ]
         then
           if [ "$fileName" != "" ]