diff --git a/src/utils/exportUtils/exportUtils.ts b/src/utils/exportUtils/exportUtils.ts
index 2baff69b36..07da0ee7af 100644
--- a/src/utils/exportUtils/exportUtils.ts
+++ b/src/utils/exportUtils/exportUtils.ts
@@ -13,7 +13,7 @@ export enum exportTypes {
     LAST_N_MESSAGES = "LAST_N_MESSAGES",
 }
 
-export const textForFormat = (format: string) => {
+export const textForFormat = (format: string): string => {
     switch (format) {
         case exportFormats.HTML:
             return _t("HTML");
@@ -43,4 +43,3 @@ export interface exportOptions {
     attachmentsIncluded: boolean;
     maxSize: number;
 }
-