diff --git a/api/GlobalEventHandlers.json b/api/GlobalEventHandlers.json
index d3988f942de8d4..1ef6ea49e65819 100644
--- a/api/GlobalEventHandlers.json
+++ b/api/GlobalEventHandlers.json
@@ -354,39 +354,6 @@
           }
         }
       },
-      "onclose": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/GlobalEventHandlers/onclose",
-          "spec_url": "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onclose",
-          "support": {
-            "chrome": {
-              "version_added": "32"
-            },
-            "chrome_android": "mirror",
-            "edge": "mirror",
-            "firefox": {
-              "version_added": "53"
-            },
-            "firefox_android": "mirror",
-            "ie": {
-              "version_added": false
-            },
-            "opera": "mirror",
-            "opera_android": "mirror",
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": "mirror",
-            "samsunginternet_android": "mirror",
-            "webview_android": "mirror"
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
       "oncontextmenu": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/GlobalEventHandlers/oncontextmenu",