diff --git a/src/Simplex/Messaging/Notifications/Server/Push/WebPush.hs b/src/Simplex/Messaging/Notifications/Server/Push/WebPush.hs
index 51e571df3..3ece66d2c 100644
--- a/src/Simplex/Messaging/Notifications/Server/Push/WebPush.hs
+++ b/src/Simplex/Messaging/Notifications/Server/Push/WebPush.hs
@@ -52,7 +52,7 @@ wpPushProviderClient mg tkn pn = do
       encBody <- body e
       let requestHeaders = [
             ("TTL", "2592000") -- 30 days
-            , ("Urgency", "High")
+            , ("Urgency", "high")
             , ("Content-Encoding", "aes128gcm")
         -- TODO: topic for pings and interval
             ]