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-rwxr-xr-xcharts.d/postfix.chart.sh4
1 files changed, 2 insertions, 2 deletions
diff --git a/charts.d/postfix.chart.sh b/charts.d/postfix.chart.sh
index d286f99f2..f4f710275 100755
--- a/charts.d/postfix.chart.sh
+++ b/charts.d/postfix.chart.sh
@@ -43,9 +43,9 @@ postfix_check() {
postfix_create() {
cat <<EOF
-CHART postfix.qemails '' "Postfix Queue Emails" "emails" queue postfix.queued.emails line $[postfix_priority + 1] $postfix_update_every
+CHART postfix.qemails '' "Postfix Queue Emails" "emails" queue postfix.queued.emails line $((postfix_priority + 1)) $postfix_update_every
DIMENSION emails '' absolute 1 1
-CHART postfix.qsize '' "Postfix Queue Emails Size" "emails size in KB" queue postfix.queued.size area $[postfix_priority + 2] $postfix_update_every
+CHART postfix.qsize '' "Postfix Queue Emails Size" "emails size in KB" queue postfix.queued.size area $((postfix_priority + 2)) $postfix_update_every
DIMENSION size '' absolute 1 1
EOF