diff --git a/fail2ban/templates/fail2ban_dbpurge.j2 b/fail2ban/templates/fail2ban_dbpurge.j2
index 3de092a3..ee984438 100644
--- a/fail2ban/templates/fail2ban_dbpurge.j2
+++ b/fail2ban/templates/fail2ban_dbpurge.j2
@@ -5,7 +5,7 @@
 /usr/bin/ionice -c3 /usr/bin/sqlite3 /var/lib/fail2ban/fail2ban.sqlite3 "DELETE FROM bans WHERE datetime('now', '-{{ bantime.stdout }} second') > datetime(timeofban, 'unixepoch');"
 
 place_dispo=$( df -h  /var/lib/fail2ban/fail2ban.sqlite3  --output="avail" -h --block-size=1 |tail -n1 )
-place_pris=$( echo "$(stat --format %s /var/lib/fail2ban/fail2ban.sqlite3 ) * 2" |bc )
+place_pris=$( echo $(("$(stat --format %s /var/lib/fail2ban/fail2ban.sqlite3 ) * 2" )) )
 
 if [ $place_pris -lt $place_dispo ]
 then