diff --git a/.changeset/slow-melons-mix.md b/.changeset/slow-melons-mix.md
new file mode 100644
index 00000000..ec66bef3
--- /dev/null
+++ b/.changeset/slow-melons-mix.md
@@ -0,0 +1,5 @@
+---
+"@theoplayer/cmcd-connector-web": patch
+---
+
+Fixed an issue where multiple CMCD query arguments were being added to the request URL.
diff --git a/cmcd/src/TransmissionModeStrategies/QueryArgumentTransmissionModeStrategy.ts b/cmcd/src/TransmissionModeStrategies/QueryArgumentTransmissionModeStrategy.ts
index 3dd7113d..3498c210 100644
--- a/cmcd/src/TransmissionModeStrategies/QueryArgumentTransmissionModeStrategy.ts
+++ b/cmcd/src/TransmissionModeStrategies/QueryArgumentTransmissionModeStrategy.ts
@@ -19,7 +19,7 @@ export class QueryArgumentTransmissionModeStrategy implements TransmissionModeSt
         const url = new URL(request.url);
         const parameters = transformToQueryParameters(payload);
         if (parameters) {
-            url.searchParams.append('CMCD', parameters);
+            url.searchParams.set('CMCD', parameters);
             request.redirect({
                 ...request,
                 url: url.href