gistfile1.txt

diff --git a/browser/components/newtab/metrics.yaml b/browser/components/newtab/metrics.yaml
index 22e15feb592aa..2e68b0b9c4ee7 100644
--- a/browser/components/newtab/metrics.yaml
+++ b/browser/components/newtab/metrics.yaml
@@ -1000,7 +1000,7 @@ messaging_system:
       - chutten@mozilla.com
     expires: never
     send_in_pings:
-      - metrics
+      - messaging-system
 
 
 messaging_system.attribution:
@@ -1114,7 +1114,7 @@ messaging_system.attribution:
       - pmcmanis@mozilla.com
     expires: never
     send_in_pings:
-      - messaging-system
+      - messaging
 
   ua:
     type: string
diff --git a/browser/components/newtab/test/xpcshell/test_AboutWelcomeTelemetry.js b/browser/components/newtab/test/xpcshell/test_AboutWelcomeTelemetry.js
index 5ecc20f8044b2..fe600777a6669 100644
--- a/browser/components/newtab/test/xpcshell/test_AboutWelcomeTelemetry.js
+++ b/browser/components/newtab/test/xpcshell/test_AboutWelcomeTelemetry.js
@@ -45,7 +45,7 @@ add_task(async function test_pingPayload() {
     AWTelemetry.pingCentre,
     "sendStructuredIngestionPing"
   );
-  sinon.stub(AWTelemetry, "_createPing").resolves({ event: "MOCHITEST" });
+  sinon.stub(AWTelemetry, "_createPing").resolves({ event: "MOCHITEST", bogus_object: {}});
 
   let pingSubmitted = false;
   GleanPings.messagingSystem.testBeforeNextSubmit(() => {
@@ -54,6 +54,9 @@ add_task(async function test_pingPayload() {
   });
   await AWTelemetry.sendTelemetry();
 
+  // make sure that "invalid_nested_ping_data" is in the right place
+  Assert.ok("invalid_nested_ping_data" in Glean.messagingSystem);
+
   equal(stub.callCount, 1, "Call was made");
   // check the endpoint
   ok(