diff --git a/src/components/users.js b/src/components/users.js
index c027d01..4392dee 100644
--- a/src/components/users.js
+++ b/src/components/users.js
@@ -106,7 +106,10 @@ export const UserEdit = props => (
         <TextInput source="displayname" />
         <PasswordInput source="password" autoComplete="new-password" />
         <BooleanInput source="admin" />
-        <BooleanInput source="deactivated" />
+        <BooleanInput
+          source="deactivated"
+          helperText="resources.users.helper.deactivate"
+        />
         <ArrayInput source="threepids">
           <SimpleFormIterator>
             <SelectInput
diff --git a/src/i18n/de.js b/src/i18n/de.js
index 3a66110..4b9e283 100644
--- a/src/i18n/de.js
+++ b/src/i18n/de.js
@@ -35,6 +35,10 @@ export default {
         threepids: "3PIDs",
         address: "Adresse",
       },
+      helper: {
+        deactivate:
+          "Deaktivierte Nutzer können nicht wieder aktiviert werden.",
+      },
     },
     rooms: {
       name: "Raum |||| Räume",
diff --git a/src/i18n/en.js b/src/i18n/en.js
index cc665b5..296883f 100644
--- a/src/i18n/en.js
+++ b/src/i18n/en.js
@@ -35,6 +35,9 @@ export default {
         threepids: "3PIDs",
         address: "Address",
       },
+      helper: {
+        deactivate: "Deactivated users cannot be reactivated",
+      },
     },
     rooms: {
       name: "Room |||| Rooms",