diff --git a/third_party/blink/renderer/core/html/resources/html.css b/third_party/blink/renderer/core/html/resources/html.css
index 53ad5c052e483..ca2139c74015a 100644
--- a/third_party/blink/renderer/core/html/resources/html.css
+++ b/third_party/blink/renderer/core/html/resources/html.css
@@ -2277,6 +2277,11 @@ select::-internal-select-autofill-preview[popover]:popover-open {
   border: 1px solid black;
 }
 select::-internal-select-autofill-preview-text {
+  /* Pin font so author @font-face/unicode-range cannot observe which option
+     label is rendered in the autofill preview. Matches the existing protection
+     for input/textarea ::-internal-input-suggested. */
+  font: -webkit-small-control !important;
+  font-feature-settings: normal !important;
   overflow: hidden;
   text-overflow: ellipsis;
   text-align: center;