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-rw-r--r--scripts/wsrep_sst_mariabackup.sh2
-rw-r--r--scripts/wsrep_sst_rsync.sh2
2 files changed, 2 insertions, 2 deletions
diff --git a/scripts/wsrep_sst_mariabackup.sh b/scripts/wsrep_sst_mariabackup.sh
index ce4001fdc56..067a777fb9c 100644
--- a/scripts/wsrep_sst_mariabackup.sh
+++ b/scripts/wsrep_sst_mariabackup.sh
@@ -472,7 +472,7 @@ read_cnf()
encrypt=$(parse_cnf "$encgroups" 'encrypt' 0)
tmode=$(parse_cnf "$encgroups" 'ssl-mode' 'DISABLED' | \
- tr [:lower:] [:upper:])
+ tr '[[:lower:]]' '[[:upper:]]')
case "$tmode" in
'VERIFY_IDENTITY'|'VERIFY_CA'|'REQUIRED'|'DISABLED')
diff --git a/scripts/wsrep_sst_rsync.sh b/scripts/wsrep_sst_rsync.sh
index 67a7afc638f..5f7ae4298b5 100644
--- a/scripts/wsrep_sst_rsync.sh
+++ b/scripts/wsrep_sst_rsync.sh
@@ -224,7 +224,7 @@ SSTCERT="$tpem"
SSTCA="$tcert"
SSTCAP="$tcap"
-SSLMODE=$(parse_cnf "$encgroups" 'ssl-mode' | tr [:lower:] [:upper:])
+SSLMODE=$(parse_cnf "$encgroups" 'ssl-mode' | tr '[[:lower:]]' '[[:upper:]]')
if [ -z "$SSLMODE" ]; then
# Implicit verification if CA is set and the SSL mode