diff --git a/html/elements/form.json b/html/elements/form.json
index 4c3348cbea55f1..5872fcd29966e0 100644
--- a/html/elements/form.json
+++ b/html/elements/form.json
@@ -429,7 +429,7 @@
           "__compat": {
             "support": {
               "chrome": {
-                "version_added": "1"
+                "version_added": "10"
               },
               "chrome_android": {
                 "version_added": "18"
@@ -450,13 +450,13 @@
                 "version_added": "15"
               },
               "opera_android": {
-                "version_added": null
+                "version_added": "14"
               },
               "safari": {
-                "version_added": null
+                "version_added": "10.1"
               },
               "safari_ios": {
-                "version_added": null
+                "version_added": "10.3"
               },
               "samsunginternet_android": {
                 "version_added": "1.0"