diff --git a/make_post_sell/views/coupon.py b/make_post_sell/views/coupon.py
index 54f858d..0eb3976 100644
--- a/make_post_sell/views/coupon.py
+++ b/make_post_sell/views/coupon.py
@@ -73,7 +73,7 @@ def coupon_new(request):
             if expiration_datetime > MAX_EXPIRATION_DATE:
                 request.session.flash(
                     (
-                        f"Expiration date is too far in the future. The maximum allowed date is {{ MAX_EXPIRATION_DATE.strftime('%Y-%m-%d') }}.",
+                        f"Expiration date is too far in the future. The maximum allowed date is { MAX_EXPIRATION_DATE.strftime('%Y-%m-%d') }.",
                         "error",
                     )
                 )