diff --git a/src/shared/components/person/inbox.tsx b/src/shared/components/person/inbox.tsx
index 395875be..c414e8be 100644
--- a/src/shared/components/person/inbox.tsx
+++ b/src/shared/components/person/inbox.tsx
@@ -11,6 +11,7 @@ import {
   setIsoData,
   updatePersonBlock,
 } from "@utils/app";
+import { capitalizeFirstLetter } from "@utils/helpers";
 import { RouteDataResponse } from "@utils/types";
 import { Component, linkEvent } from "inferno";
 import {
@@ -243,7 +244,9 @@ export class Inbox extends Component<any, InboxState> {
                 {this.state.markAllAsReadRes.state == "loading" ? (
                   <Spinner />
                 ) : (
-                  I18NextService.i18n.t("mark_all_as_read")
+                  capitalizeFirstLetter(
+                    I18NextService.i18n.t("mark_all_as_read")
+                  )
                 )}
               </button>
             )}