diff --git a/src/server/request-handler.ts b/src/server/request-handler.ts
index 529a2da..7b4bf92 100644
--- a/src/server/request-handler.ts
+++ b/src/server/request-handler.ts
@@ -965,7 +965,7 @@ export function createRequestHandler() {
       if (!share) {
         res.statusCode = 400;
         res.setHeader("content-type", "application/json; charset=utf-8");
-        res.end(JSON.stringify({ error: "share parameter missing" }));
+        res.end(JSON.stringify({ error: "missing `share` parameter" }));
         return;
       }
 
@@ -1015,7 +1015,7 @@ export function createRequestHandler() {
       if (!target) {
         res.statusCode = 400;
         res.setHeader("content-type", "application/json; charset=utf-8");
-        res.end(JSON.stringify({ error: "url parameter missing" }));
+        res.end(JSON.stringify({ error: "missing `url` parameter" }));
         return;
       }