diff --git a/android/app/src/main/java/org/wiicompiled/quest/launcher/LauncherActivity.kt b/android/app/src/main/java/org/wiicompiled/quest/launcher/LauncherActivity.kt
index 2db9d9d..9eea75c 100644
--- a/android/app/src/main/java/org/wiicompiled/quest/launcher/LauncherActivity.kt
+++ b/android/app/src/main/java/org/wiicompiled/quest/launcher/LauncherActivity.kt
@@ -362,9 +362,10 @@ class LauncherActivity : Activity() {
                 showBanner(getString(R.string.home_mod_needed_message), warning = true)
             gameStatus == GameLibrary.Status.Stale -> showBanner(getString(R.string.home_game_stale), warning = true)
             gameStatus == GameLibrary.Status.Missing && discStatus == GameStorage.DiscStatus.Missing ->
-                showBanner(getString(R.string.home_setup_intro), warning = false)
+                showBanner(getString(R.string.home_setup_intro) + discMd5Note(), warning = false)
             gameStatus == GameLibrary.Status.Missing -> showBanner(getString(R.string.home_game_missing), warning = false)
-            discStatus == GameStorage.DiscStatus.Missing -> showBanner(getString(R.string.home_data_missing, disc), warning = false)
+            discStatus == GameStorage.DiscStatus.Missing ->
+                showBanner(getString(R.string.home_data_missing, disc) + discMd5Note(), warning = false)
             else -> showBanner(null)
         }
 
@@ -527,6 +528,9 @@ class LauncherActivity : Activity() {
         }
     }
 
+    /** The clean disc's .iso hash, for the banners that ask for a disc image. */
+    private fun discMd5Note(): String = "\n\n" + getString(R.string.disc_md5_note, getString(R.string.disc_md5))
+
     private fun showBanner(text: String?, warning: Boolean = false) {
         if (text == null) {
             dataBanner.visibility = View.GONE
diff --git a/android/app/src/main/java/org/wiicompiled/quest/launcher/SettingsPage.kt b/android/app/src/main/java/org/wiicompiled/quest/launcher/SettingsPage.kt
index bc5ef18..ee25954 100644
--- a/android/app/src/main/java/org/wiicompiled/quest/launcher/SettingsPage.kt
+++ b/android/app/src/main/java/org/wiicompiled/quest/launcher/SettingsPage.kt
@@ -326,6 +326,7 @@ class SettingsPage(
             action(R.string.about_extract, R.string.about_extract_helper, R.string.home_select_disc, enabled = idle) {
                 selectDiscImage()
             }
+            info(R.string.about_disc_md5, activity.getString(R.string.disc_md5), stacked = true)
             // One row per game this app carries a kit for, so both are visible at once.
             for (profile in GameProfile.available(activity)) {
                 val manifest = GameLibrary.manifest(activity, profile)
diff --git a/android/app/src/main/res/values/strings.xml b/android/app/src/main/res/values/strings.xml
index 6d15a0b..358fcb4 100644
--- a/android/app/src/main/res/values/strings.xml
+++ b/android/app/src/main/res/values/strings.xml
@@ -285,6 +285,10 @@
     <string name="about_logs">Logs</string>
     <string name="about_extract">Extract from disc image</string>
     <string name="about_extract_helper">Replaces DATA with the files of your own PAL disc image.</string>
+    <!-- MD5 of the clean PAL (RMCP01) disc as a plain .iso (Redump). -->
+    <string name="disc_md5" translatable="false">E7B1FF1FABB0789482CE2CB0661D986E</string>
+    <string name="disc_md5_note">Your disc image must be the clean PAL game: as a .iso file its MD5 hash is %1$s. Compressed images (WBFS, RVZ…) have a different hash.</string>
+    <string name="about_disc_md5">Clean PAL .iso MD5</string>
     <string name="about_game">Game</string>
     <string name="about_game_ready">Built by %1$s on %2$s</string>
     <string name="about_game_missing">Not installed yet</string>