diff --git a/toolkit/content/aboutSupport.js b/toolkit/content/aboutSupport.js
index 8d775926b780..844448fee8fa 100644
--- a/toolkit/content/aboutSupport.js
+++ b/toolkit/content/aboutSupport.js
@@ -375,7 +375,6 @@ var snapshotFormatters = {
            : localizedMsg(["apzNone"]));
     addRowFromKey("features", "webglRenderer");
     addRowFromKey("features", "webgl2Renderer");
-    addRowFromKey("features", "supportsHardwareH264", "hardwareH264");
     addRowFromKey("features", "currentAudioBackend", "audioBackend");
     addRowFromKey("features", "direct2DEnabled", "#Direct2D");
 
diff --git a/toolkit/modules/Troubleshoot.jsm b/toolkit/modules/Troubleshoot.jsm
index 6c48defb55bb..c1569535739e 100644
--- a/toolkit/modules/Troubleshoot.jsm
+++ b/toolkit/modules/Troubleshoot.jsm
@@ -352,12 +352,6 @@ var dataProviders = {
     let winUtils = Services.wm.getMostRecentWindow("").
                    QueryInterface(Ci.nsIInterfaceRequestor).
                    getInterface(Ci.nsIDOMWindowUtils)
-    data.supportsHardwareH264 = "Unknown";
-    let promise = winUtils.supportsHardwareH264Decoding;
-    promise.then(function(v) {
-      data.supportsHardwareH264 = v;
-    });
-    promises.push(promise);
 
     data.currentAudioBackend = winUtils.currentAudioBackend;
 
diff --git a/toolkit/modules/tests/browser/browser_Troubleshoot.js b/toolkit/modules/tests/browser/browser_Troubleshoot.js
index 5ca0900a9978..3ba9d45691bf 100644
--- a/toolkit/modules/tests/browser/browser_Troubleshoot.js
+++ b/toolkit/modules/tests/browser/browser_Troubleshoot.js
@@ -225,9 +225,6 @@ const SNAPSHOT_SCHEMA = {
         windowLayerManagerRemote: {
           type: "boolean",
         },
-        supportsHardwareH264: {
-          type: "string",
-        },
         currentAudioBackend: {
           type: "string",
         },