diff --git a/toolkit/components/telemetry/Histograms.json b/toolkit/components/telemetry/Histograms.json
index 931537ad6c0f..e1ec2f2bee3e 100644
--- a/toolkit/components/telemetry/Histograms.json
+++ b/toolkit/components/telemetry/Histograms.json
@@ -12628,15 +12628,6 @@
     "kind": "count",
     "releaseChannelCollection": "opt-out",
     "description": "Counts the number of times that about:tabcrashed was unloaded without submitting."
-  },
-   "D3D9_COMPOSITING_FAILURE_ID": {
-    "record_in_processes": ["main", "content"],
-       "alert_emails": ["gfx-telemetry-alerts@mozilla.com","msreckovic@mozilla.com"],
-    "expires_in_version": "59",
-    "kind": "count",
-    "keyed": true,
-    "description": "D3D9 compositor runtime and dynamic failure IDs. This will record a count for each context creation success or failure. Each failure id is a unique identifier that can be traced back to a particular failure branch or blocklist rule.",
-    "bug_numbers": [1002846]
   },
     "D3D11_COMPOSITING_FAILURE_ID": {
     "record_in_processes": ["main", "content", "gpu"],
diff --git a/toolkit/components/telemetry/histogram-whitelists.json b/toolkit/components/telemetry/histogram-whitelists.json
index 509c4b5faac3..40d2d30db735 100644
--- a/toolkit/components/telemetry/histogram-whitelists.json
+++ b/toolkit/components/telemetry/histogram-whitelists.json
@@ -1488,7 +1488,6 @@
     "CYCLE_COLLECTOR_WORKER_OOM",
     "D3D11_COMPOSITING_FAILURE_ID",
     "D3D11_SYNC_HANDLE_FAILURE",
-    "D3D9_COMPOSITING_FAILURE_ID",
     "DEDICATED_WORKER_SPAWN_GETS_QUEUED",
     "DEFECTIVE_PERMISSIONS_SQL_REMOVED",
     "DENIED_TRANSLATION_OFFERS",