diff --git a/xymon/plugins/client/ext/smartoverall b/xymon/plugins/client/ext/smartoverall
index cbc832d..a72e8fe 100755
--- a/xymon/plugins/client/ext/smartoverall
+++ b/xymon/plugins/client/ext/smartoverall
@@ -159,7 +159,7 @@ choose_correct_type() {
 true > "${plugin_result}"
 true > "${plugin_state}"
 regenerate_if_too_old "${device_list}" 1440
-true > "${drivedb_list}"
+regenerate_if_too_old "${drivedb_list}" 1440
 
 # Get the list of all available devices if the previous list was emptied
 if test ! -s "${device_list}"; then
@@ -215,12 +215,13 @@ https://www.smartmontools.org/wiki/FAQ#SmartmontoolsDatabase"
 			else
 				DSELFTEST_MSG=""
 				### If the device is also known from smartmontools database
-				if printf -- '%s' "${DDRIVEDB_MSG}" | grep -q -E -- "green"
+				###    and not already present in the list of compatible disk
+				if printf -- '%s' "${DDRIVEDB_MSG}" | grep -q -E -- "green" &&
+					! grep -q -- "${DISK}" "${drivedb_list}"
 				then
 					echo "${DISK}" >> "${drivedb_list}"
 				fi
 			fi
-
 		fi
 
 		## Test health status