diff --git a/apps/scandic-web/components/ContentType/PromoCampaignPage/Hero/ActivateOffer/index.tsx b/apps/scandic-web/components/ContentType/PromoCampaignPage/Hero/ActivateOffer/index.tsx
index 8720e5614..160f6172f 100644
--- a/apps/scandic-web/components/ContentType/PromoCampaignPage/Hero/ActivateOffer/index.tsx
+++ b/apps/scandic-web/components/ContentType/PromoCampaignPage/Hero/ActivateOffer/index.tsx
@@ -6,6 +6,8 @@ import { Button } from "@scandic-hotels/design-system/Button"
 import { trackEvent } from "@scandic-hotels/tracking/base"
 import { trpc } from "@scandic-hotels/trpc/client"
 
+import useLang from "@/hooks/useLang"
+
 import { CampaignActivated } from "./CampaignActivated"
 import { ErrorModal } from "./ErrorModal"
 
@@ -22,6 +24,7 @@ export default function ActivateOffer({
   campaignIsActive,
 }: ActivateOfferProps) {
   const intl = useIntl()
+  const lang = useLang()
   const router = useRouter()
   const trpcUtils = trpc.useUtils()
 
@@ -32,7 +35,7 @@ export default function ActivateOffer({
         ctaName: "activate offer",
       },
     })
-    activateCampaign.mutate({ promotionId: promoCode })
+    activateCampaign.mutate({ promotionId: promoCode, language: lang })
   }
 
   const activateCampaign = trpc.user.promoCampaign.add.useMutation({
diff --git a/packages/trpc/lib/routers/user/input.ts b/packages/trpc/lib/routers/user/input.ts
index 5a4da6e1e..73e0ee771 100644
--- a/packages/trpc/lib/routers/user/input.ts
+++ b/packages/trpc/lib/routers/user/input.ts
@@ -65,4 +65,5 @@ export type GetSavedPaymentCardsInput = z.input<
 
 export const addPromoCampaignInput = z.object({
   promotionId: z.string(),
+  language: z.nativeEnum(Lang),
 })
diff --git a/packages/trpc/lib/routers/user/mutation.ts b/packages/trpc/lib/routers/user/mutation.ts
index 36cddff52..df77a89d5 100644
--- a/packages/trpc/lib/routers/user/mutation.ts
+++ b/packages/trpc/lib/routers/user/mutation.ts
@@ -230,6 +230,7 @@ export const userMutationRouter = router({
             },
             body: {
               promotionId: input.promotionId,
+              language: input.language,
             },
           }
         )