diff --git a/modules/webapp/src/main/elm/Comp/ItemDetail/SingleAttachment.elm b/modules/webapp/src/main/elm/Comp/ItemDetail/SingleAttachment.elm
index f9ca4e58..75c51dfc 100644
--- a/modules/webapp/src/main/elm/Comp/ItemDetail/SingleAttachment.elm
+++ b/modules/webapp/src/main/elm/Comp/ItemDetail/SingleAttachment.elm
@@ -129,7 +129,7 @@ attachHeader texts settings model _ attach =
     in
     div [ class "flex flex-col sm:flex-row items-center w-full" ]
         [ attachSelectToggle False
-        , div [ class "ml-2 text-base font-bold flex-grow w-full text-center sm:text-left" ]
+        , div [ class "ml-2 text-base font-bold flex-grow w-full text-center sm:text-left break-all" ]
             [ text attachName
             , text " ("
             , text (Util.Size.bytesReadable Util.Size.B (toFloat attach.size))