diff --git a/src/components/views/settings/EventIndexPanel.js b/src/components/views/settings/EventIndexPanel.js
index 5edc25bbab..321f45699b 100644
--- a/src/components/views/settings/EventIndexPanel.js
+++ b/src/components/views/settings/EventIndexPanel.js
@@ -140,6 +140,22 @@ export default class EventIndexPanel extends React.Component {
                     </div>
                 </div>
             );
+        } else if (EventIndexPeg.platformHasSupport() && !EventIndexPeg.supportIsInstalled()) {
+            eventIndexingSettings = (
+                <div>
+                    {
+                        _t( "Riot is missing some components required for securely " +
+                            "caching encrypted messages locally. If you'd like to " +
+                            "experiment with this feature, build a custom Riot Desktop " +
+                            "with <nativeLink>search components added</nativeLink>.",
+                            {},
+                            {
+                                'nativeLink': (sub) => <a href="https://github.com/vector-im/riot-web/blob/develop/docs/native-node-modules.md#adding-seshat-for-search-in-e2e-encrypted-rooms">{sub}</a>,
+                            },
+                        )
+                    }
+                </div>
+            );
         } else {
             eventIndexingSettings = (
                 <div>
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index fceb299131..419aecd528 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -560,6 +560,7 @@
     "Manage": "Manage",
     "Securely cache encrypted messages locally for them to appear in search results.": "Securely cache encrypted messages locally for them to appear in search results.",
     "Enable": "Enable",
+    "Riot is missing some components required for securely caching encrypted messages locally. If you'd like to experiment with this feature, build a custom Riot Desktop with <nativeLink>search components added</nativeLink>.": "Riot is missing some components required for securely caching encrypted messages locally. If you'd like to experiment with this feature, build a custom Riot Desktop with <nativeLink>search components added</nativeLink>.",
     "Riot can't securely cache encrypted messages locally while running in a web browser. Use <riotLink>Riot Desktop</riotLink> for encrypted messages to appear in search results.": "Riot can't securely cache encrypted messages locally while running in a web browser. Use <riotLink>Riot Desktop</riotLink> for encrypted messages to appear in search results.",
     "Connecting to integration manager...": "Connecting to integration manager...",
     "Cannot connect to integration manager": "Cannot connect to integration manager",