diff --git a/opt/hc/lib/platform/linux/check_linux_uptime.sh b/opt/hc/lib/platform/linux/check_linux_uptime.sh
index 48fc0cc..9f6866e 100644
--- a/opt/hc/lib/platform/linux/check_linux_uptime.sh
+++ b/opt/hc/lib/platform/linux/check_linux_uptime.sh
@@ -46,7 +46,7 @@ typeset _ARG=""
 typeset _MSG=""
 typeset _STC=0
 typeset _LOG_HEALTHY=0
-typset _CFG_HEALTHY=
+typeset _CFG_HEALTHY=
 typeset _CFG_CHECK_REBOOT=""
 typeset _CFG_REBOOT_TIME=""
 typeset _CFG_CHECK_OLD_AGE=""