diff --git a/app/src/main/java/com/stevesoltys/seedvault/settings/SettingsFragment.kt b/app/src/main/java/com/stevesoltys/seedvault/settings/SettingsFragment.kt
index 0afc43fe..b9a60120 100644
--- a/app/src/main/java/com/stevesoltys/seedvault/settings/SettingsFragment.kt
+++ b/app/src/main/java/com/stevesoltys/seedvault/settings/SettingsFragment.kt
@@ -180,6 +180,12 @@ class SettingsFragment : PreferenceFragmentCompat() {
         activity?.contentResolver?.let {
             autoRestore.isChecked = Settings.Secure.getInt(it, BACKUP_AUTO_RESTORE, 1) == 1
         }
+        if (storage?.isUsb == true) {
+            autoRestore.summary = getString(R.string.settings_auto_restore_summary) + "\n\n" +
+                    getString(R.string.settings_auto_restore_summary_usb)
+        } else {
+            autoRestore.setSummary(R.string.settings_auto_restore_summary)
+        }
     }
 
     private fun setBackupLocationSummary(lastBackupInMillis: Long) {
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index ceaeb399..cd845216 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -17,7 +17,8 @@
     <string name="settings_backup_location_summary">%1$s · Last Backup %2$s</string>
     <string name="settings_info">All backups are encrypted on your phone. To restore from backup you will need your 12-word recovery code.</string>
     <string name="settings_auto_restore_title">Automatic restore</string>
-    <string name="settings_auto_restore_summary">When reinstalling an app, restore backed up settings and data</string>
+    <string name="settings_auto_restore_summary">When reinstalling an app, restore backed up settings and data.</string>
+    <string name="settings_auto_restore_summary_usb">Note: Your USB flash drive needs to be plugged in for this to work.</string>
     <string name="settings_backup_apk_title">App backup</string>
     <string name="settings_backup_apk_summary">Back up the apps themselves. Otherwise, only app data would get backed up.</string>
     <string name="settings_backup_apk_dialog_title">Really disable app backup?</string>