diff --git a/zabbix-server/stack.env b/zabbix-server/stack.env
index 3c8455d..ce63c80 100755
--- a/zabbix-server/stack.env
+++ b/zabbix-server/stack.env
@@ -83,7 +83,7 @@ ZBX_STARTCONNECTORS=1
 # ZBX_MAXHOUSEKEEPERDELETE=5000
 # ZBX_PROBLEMHOUSEKEEPINGFREQUENCY=60 # Available since 6.0.0
 # ZBX_SENDERFREQUENCY=30 # Depcrecated since 3.4.0
-# ZBX_CACHESIZE=64M
+ZBX_CACHESIZE=64M
 # ZBX_CACHEUPDATEFREQUENCY=10
 # ZBX_STARTDBSYNCERS=4
 # ZBX_EXPORTFILESIZE=1G # Available since 4.0.0