diff --git a/api/MutationEvent.json b/api/MutationEvent.json
index 5a9a50ba8b8d1e..8028fc5c822c17 100644
--- a/api/MutationEvent.json
+++ b/api/MutationEvent.json
@@ -3,7 +3,6 @@
     "MutationEvent": {
       "__compat": {
         "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationEvent",
-        "spec_url": "https://w3c.github.io/uievents/#interface-mutationevent",
         "support": {
           "chrome": {
             "version_added": "1",
@@ -38,14 +37,13 @@
         },
         "status": {
           "experimental": false,
-          "standard_track": true,
+          "standard_track": false,
           "deprecated": true
         }
       },
       "attrChange": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationEvent/attrChange",
-          "spec_url": "https://w3c.github.io/uievents/#dom-mutationevent-attrchange",
           "support": {
             "chrome": {
               "version_added": "1",
@@ -80,7 +78,7 @@
           },
           "status": {
             "experimental": false,
-            "standard_track": true,
+            "standard_track": false,
             "deprecated": true
           }
         }
@@ -88,7 +86,6 @@
       "attrName": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationEvent/attrName",
-          "spec_url": "https://w3c.github.io/uievents/#dom-mutationevent-attrname",
           "support": {
             "chrome": {
               "version_added": "1",
@@ -123,7 +120,7 @@
           },
           "status": {
             "experimental": false,
-            "standard_track": true,
+            "standard_track": false,
             "deprecated": true
           }
         }
@@ -131,7 +128,6 @@
       "initMutationEvent": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationEvent/initMutationEvent",
-          "spec_url": "https://w3c.github.io/uievents/#dom-mutationevent-initmutationevent",
           "support": {
             "chrome": {
               "version_added": "1",
@@ -166,7 +162,7 @@
           },
           "status": {
             "experimental": false,
-            "standard_track": true,
+            "standard_track": false,
             "deprecated": true
           }
         }
@@ -174,7 +170,6 @@
       "newValue": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationEvent/newValue",
-          "spec_url": "https://w3c.github.io/uievents/#dom-mutationevent-newvalue",
           "support": {
             "chrome": {
               "version_added": "1",
@@ -209,7 +204,7 @@
           },
           "status": {
             "experimental": false,
-            "standard_track": true,
+            "standard_track": false,
             "deprecated": true
           }
         }
@@ -217,7 +212,6 @@
       "prevValue": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationEvent/prevValue",
-          "spec_url": "https://w3c.github.io/uievents/#dom-mutationevent-prevvalue",
           "support": {
             "chrome": {
               "version_added": "1",
@@ -252,7 +246,7 @@
           },
           "status": {
             "experimental": false,
-            "standard_track": true,
+            "standard_track": false,
             "deprecated": true
           }
         }
@@ -260,7 +254,6 @@
       "relatedNode": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationEvent/relatedNode",
-          "spec_url": "https://w3c.github.io/uievents/#dom-mutationevent-relatednode",
           "support": {
             "chrome": {
               "version_added": "1",
@@ -295,7 +288,7 @@
           },
           "status": {
             "experimental": false,
-            "standard_track": true,
+            "standard_track": false,
             "deprecated": true
           }
         }