diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 62608623..282ce3f1 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -315,6 +315,7 @@
     <string name="settings_sync_summary_not_available">Not available</string>
     <string-array name="settings_sync_interval_seconds" translateable="false">
         <item>-1</item>
+        <item>300</item>
         <item>900</item>
         <item>3600</item>
         <item>7200</item>
@@ -323,6 +324,7 @@
     </string-array>
     <string-array name="settings_sync_interval_names">
         <item>Only manually</item>
+        <item>Every 5 minutes</item>
         <item>Every 15 minutes</item>
         <item>Every hour</item>
         <item>Every 2 hours</item>