diff --git a/lib/microwaveprop_web/live/path_live.ex b/lib/microwaveprop_web/live/path_live.ex
index d967d355..0286d4aa 100644
--- a/lib/microwaveprop_web/live/path_live.ex
+++ b/lib/microwaveprop_web/live/path_live.ex
@@ -497,7 +497,12 @@ defmodule MicrowavepropWeb.PathLive do
             </div>
           </div>
           <div class="fieldset">
-            <label class="label text-sm font-medium">Destination (callsign or grid)</label>
+            <label class="label text-sm font-medium">
+              Destination (<span
+                class="tooltip tooltip-top underline decoration-dotted cursor-help"
+                data-tip="Callsign lookup queries QRZ for the licensee's mailing address, then geocodes that address — so the position may be off from where the station actually operates."
+              >callsign</span> or grid)
+            </label>
             <input
               type="text"
               name="destination"