diff --git a/xymon/plugins/client/ext/smartoverall b/xymon/plugins/client/ext/smartoverall
index a72e8fe..f1c6866 100755
--- a/xymon/plugins/client/ext/smartoverall
+++ b/xymon/plugins/client/ext/smartoverall
@@ -97,11 +97,13 @@ is_disk_support_smart() {
 
 	[ "${debug}" -eq "0" ] && printf "${c_magentab}%-6b${c_reset}\n" "DEBUG : is_disk_support_smart func − check if SMART is supported on : ${_disk}."
 
-	## Create or empty previous file
-	true > "${_smarctl_support_result}"
+	## Create or empty previous file only if older than 24h (1440 minutes)
+	regenerate_if_too_old "${_smarctl_support_result}" 1440
 
-	## Grep only "support" lines from disk's informations
-	smartctl -d "${_type}" -i -- "${_disk}" | grep -E "^SMART support is:" -- >> "${_smarctl_support_result}"
+	## Grep only "support" lines from disk's informations only if the file was emptied
+	if test ! -s "${_smarctl_support_result}"; then
+		smartctl -d "${_type}" -i -- "${_disk}" | grep -E "^SMART support is:" -- >> "${_smarctl_support_result}"
+	fi
 
 	## If the file is not empty
 	if test -s "${_smarctl_support_result}"; then